DE102012001503B4 - Pallet for transporting trolleys - Google Patents

Abstract

The invention relates to a pallet (P) for transporting trolleys with raceways for receiving wheels of the trolleys (2) onto which at least two trolleys (2) can be pushed one behind the other, at least one between the raceways (1.1, 1.2, 1.3, 1.4) arranged tunnel-like space (1.5, 1.6) for receiving forks of a forklift and at least one blocking device (4) for blocking the pushed-on trolley (2). Load and unload trolleys (2) around the pallet (P) from both ends of the raceways (1.1, 1.2, 1.3, 1.4) and a single trolley against a dangerous tip, even if the pallet is not fully loaded with trolleys (2) arranged one behind the other - And to be able to secure rolls on the raceways for the transport of the pallet, the blocking device (4) has at least two at the ends of the pallet (P), which at the same time define the ends of at least one of the raceways (1.1, 1.2, 1.3, 1.4) , arranged end bolts (4.1, 4.2) and at least one inner bolt (4.3) arranged between these ends of the pallet, the end bolts (4.1, 4.2) being coupled to the at least one inner bolt (4.3) via couplings (5) , and wherein the couplings (5) are designed such that when one of the end bolts (4.1 or 4.2) is actuated, the at least one inner bolt (4.3) is also actuated and the other end bolt (4.2 or 4.1) is not operated.

Description

The invention relates to a pallet for transporting trolleys with raceways for receiving wheels of the trolley, on the at least two trolleys are pushed one behind the other, at least one arranged between the raceways tunnel-like space for receiving forks of a forklift and at least one blocking device for blocking the deferred trolley ,

The trolleys may in particular be trolleys with small load carrier containers stacked thereon.

Such pallets, which are also referred to as adapter pallets, are known in various designs.

From the DE 20 2006 007 202 U1 a pallet for transporting trolley is known, the supporting base element consists of a folded metal sheet. The pallet has two formed by the folds in the metal sheet, downwardly open underpass tunnel for the forks of a forklift, and also formed by the folds in the metal sheet, the underpass tunnels running tracks for the wheels of the trolley. The raceways are essentially at ground level of the pallet. Furthermore, the pallet is provided with a fixed plate-shaped stop at one end of at least one of the raceways as well as with a lock for blocking at least one of the raceways at the other end. The fuse for blocking at least one of the raceways is formed from a pivotable from the side in the career blocking lever. Due to the fixedly mounted at one end plate-shaped stop a sliding and pushing trolleys only from one end of the raceways, namely from the opposite end of the stop is possible. This can lead to difficulties when loading the pallet with loaded trolley or when pushing the loaded trolley, for example, when the backup in the form of the blocking lever end of the loaded pallet is located a short distance from a wall or other obstacle. Furthermore, it is unsatisfactory in this range that not complete loading of the pallet with successively arranged trolley or removal of one behind the other arranged trolley, the remaining still on the pallet trolley not by the end-mounted locking lever against a dangerous back and forth rolling on the raceways can be secured for the transport of the pallet.

Other pallets (adapter pallets) of the aforementioned type are from the WO 2009/090309 A1 as well as the DE 20 2010 009 390 U1 known. These pallets each have a blocking device, which can be brought into engagement with a component of the trolley for locking the respective trolley. Thus, the trolley for the transport of the pallet can be secured even with incomplete loading of the pallet or when removing one or more trolleys from the pallet against a rolling and rolling on the raceways by the blocking device. On the other hand, from the WO 2009/090309 A1 as well as the DE 20 2010 009 390 U1 known pallets but in turn at one end of their rolling cart receiving raceways fixed, plate-shaped stops. When using these pallets can therefore also the above with respect to the from DE 20 2006 007 202 U1 known pallet mentioned difficulties occur.

Furthermore, from the GB 2 416 527 B a pallet for transporting trolleys with raceways for receiving and guiding the trolley wheels known. This known range allows pushing and pushing loaded trolleys at both ends of the raceways. For this purpose, the pallet has ramps which can be folded up and down at the ends of the raceways. The respective ramp is provided with a locking mechanism, by means of which they can be locked in a raised position and thus secures the deferred trolley on the pallet. However, this pallet is again unsatisfactory that when not completely loading the pallet with successively arranged trolley or when removing one of the successively arranged trolley from the pallet, the remaining still on the pallet trolleys not against dangerous back and forth on the tracks for the Transport the pallet can be secured by the end-mounted ramps.

The DE 38 08 720 A1 discloses a transport and storage unit consisting of a pallet and from at least one pallet accessible and roll-off on the pallet roll container. The pallet is equipped with raceways intended to receive and guide the wheels of the at least one roll container. On the pallet at least two trolleys are pushed one behind the other. Between the raceways tunnel-like spaces for receiving forks of a forklift are arranged. The pallet also has locking members, which serve for the positionally accurate locking of the roll container on the pallet. Each roll container has at least one stop, wherein each stop with at least one breakthrough, incision or the like for receiving part of each one located on the pallet Resting element is equipped. The locking members are movable both by the attacks of rolling on the pallet rolling containers, as well as arranged on the pallet actuators.

The present invention has for its object to provide a pallet of the type mentioned, which can be loaded and unloaded from both ends of the raceways with trolley and has a comfortable blocking device with the not complete loading of the pallet with successively arranged trolley and a single Trolley against dangerous rolling over and rolling on the raceways for the transport of the pallet can be secured.

To solve this problem, a pallet with the features of claim 1 is proposed. Advantageous embodiments of the pallet according to the invention are specified in the subclaims.

The pallet according to the invention is characterized in that the blocking device has at least two end latches arranged at the ends of the pallet which at the same time define the ends of at least one of the raceways and at least one inner lug arranged between these ends of the pallet, the latches being connected via couplings are coupled to the at least one inner latch, and wherein the clutches are designed such that upon actuation of one of the end-side latch, the at least one inner latch mitbetätigt and the other end-side latch is not mitbetätigt.

The pallet according to the invention (adapter pallet) can thus be conveniently loaded and unloaded from both sides with trolleys. In case of incomplete loading of the pallet with successively arranged trolley can be secured by means of the blocking device of the pallet according to the invention also a single trolley against dangerous back and forth rolling on the raceways in a simple manner.

In one embodiment of the invention, the end-side latch and the inner latch of the blocking device are each formed as a rotary latch. The blocking device can be realized in this case by a relatively simple and reliable rotating mechanism, whereby relatively low manufacturing and assembly costs can be achieved.

A further advantageous embodiment of the invention is characterized in that the respective coupling of the blocking device is formed of a driver and a form-fitting connected thereto, movable relative to the driver stop. This embodiment allows in a particularly simple and reliable manner an independent actuation of the end-side bolt under co-operation of the at least one inner bolt.

With regard to the operation of the blocking device of the pallet according to the invention, it is also advantageous if, according to a further preferred embodiment, the inner latch is provided with a spring, through which it is tensioned in a blocking position. This can be ensured in non-actuation of the bolt in a simple and reliable way, an automatic blocking deferred trolley.

A further embodiment of the invention is that the respective coupling is connected via a torsion bar with one of the end-side latch or the inner latch. This embodiment is advantageous in terms of a simple and reliable operation of the blocking device.

With regard to the manufacture and assembly of the blocking device, it is also advantageous if according to a further embodiment of the invention, the respective coupling is designed as a plug-in coupling.

A further embodiment of the pallet according to the invention provides that the end-side latch and the inner latch engage in their respective blocking position on end faces of frames or platforms of the pushed trolleys. This embodiment is advantageous because the bolt is not on the wheels (as in the case of the DE 20 2006 007 202 U1 known pallet), but attack at a relatively high position of the trolley. As a result, a higher security is achieved with respect to the locking of the trolley. An arrangement of the latch in the region of the wheels of the suspended trolleys to lock them is rather unsatisfactory because the trolleys typically have castors and castors as wheels. The position of the castors with respect to the frame of the trolley and the wheelbase of the wheels depend on whether the castors run in the direction of retraction of the trolley or run after. The different position of the castors or the different center distance can lead to a correspondingly loose locking the trolley. In addition, a blocking arrangement of the bolt on end faces of frames or platforms of the pushed trolley can optically check well, which is advantageous in terms of the use of generic adapter pallets.

The range of the invention is thus characterized in particular by the advantage that the bolt in their respective blocking position protrude relatively high relative to the lane of the deferred trolley and thus the risk of unintentional jumping out of a trolley from the lock is largely reduced. Furthermore, the range of the invention is characterized by the advantage that neither a fixed role position on the body or special geometric features, such as structural or form-fitting elements on the body of the trolley are necessary.

The pallet according to the invention only requires trolleys (frame trolleys) with a fixed gauge. In addition, the outer dimensions of the respective trolley should preferably be slightly smaller than the dimensions of a small load carrier box (600 mm × 400 mm), which is usually met in commercial trolley (frame carriage).

It is also conceivable to use the pallet according to the invention in conjunction with trolleys (frame trolleys) which (with the appropriate gauge) have twice the length and / or twice the width of the rolling trolley (frame trolley) normally provided for the pallet. Thus, for example, on the pallet according to the invention also trolleys for small load carriers with the format 800 × 600 (2 pieces) or special small load carrier with the format 400 × 1200 (2 pieces) or 800 × 1200 (1 piece) and possible combinations of small load carriers such formats added become.

In a further embodiment of the pallet according to the invention each of the tracks is bounded by at least one parallel to the longitudinal center axis of the pallet bar and end adjacent thereto shorter strips, the shorter strips are angled relative to the at least one parallel to the longitudinal center axis of the pallet bar and a funnel-shaped The entry area for wheels is defined by the trolleys to be pushed onto the pallet. This configuration facilitates the postponement of the loaded trolley on the pallet and is favorable in terms of manufacturing technology.

The pallet according to the invention has, in another embodiment, a profiled base body as a supporting element, which is provided with strips running along the tracks for guiding wheels of the trolleys. The main body is preferably made of a one-piece, formed sheet metal blank, for example steel plate.

In a further embodiment, the pallet according to the invention has horizontally extending surface parts as raceways and vertically extending surface parts, wherein the surface parts serving as raceways are connected integrally directly via obliquely angled surface parts with the vertically extending surface parts. As a result, can be achieved with relatively little effort advantageous guides for the wheels of the trolley.

The length and width of the pallet according to the invention preferably correspond to the dimensions of a so-called Euro pallet with the standard format of about 1200 mm × 800 mm. The pallet according to the invention is in this case hochregalfähig.

The invention will be explained in more detail with reference to an exemplary embodiments illustrative drawing. Show it:

1 a pallet according to the invention with two slide-on trolley secured thereon against rolling and rolling, in a perspective view;

2 to 4 the pallet with the two trolleys of the 1 in longitudinal side view, top view and end view;

5 a blocking device intended for mounting on the pallet according to the invention with two end-side bars and an inner bar arranged between two couplings, in a perspective view;

6 the blocking device of 5 however, the cooperating parts of one of the two clutches are shown in an unconnected position; and

7 an enlarged view of detail A of 6 ,

The illustrated in the drawing range (adapter pallet) P is used to transport trolleys 2 , preferably trolley (frame carriage) 2 for so-called KLT containers (= small load carrier containers).

The pallet P has a base body 1 as a carrier, which is made by forming, for example by folding, a one-piece sheet metal blank. In the main body 1 are careers 1.1 . 1.2 . 1.3 . 1.4 for receiving the wheels 2.1 . 2.2 the trolley 2 formed, for example, two trolleys 2 can be pushed one behind the other. The length and width of the pallet P preferably correspond to the dimensions of a so-called Euro pallet or preferably do not exceed the dimension of about 1200 mm × 800 mm. The pallet P according to the invention is particularly suitable for high-bay warehouses. In addition, several such pallets P in the unloaded state form-fitting stacked on each other.

The pallet P shown has four parallel tracks 1.1 . 1.2 . 1.3 . 1.4 on, with the raceways 1.1 . 1.2 and the tracks 1.3 . 1.4 are assigned to each other in pairs. The invention also includes embodiments in which in the body 1 the pallet P optionally only two or more than four parallel tracks 1.1 . 1.2 . 1.3 . 1.4 are provided. However, the embodiment with four raceways is preferred 1.1 . 1.2 . 1.3 . 1.4 according to the embodiment shown in the drawing. The profiled basic body 1 is in each case designed so that the pallet P according to the invention can be picked up and transported with conventional hoists, such as forklifts or low-lift trucks, for example so-called "electric ants".

Between the paired raceways 1.1 . 1.2 and 1.3 . 1.4 of the profiled basic body 1 is in each case a downwardly open, tunnel-like space 1.5 . 1.6 educated. In these tunnel-like spaces 1.5 . 1.6 The forks of a forklift or a low-lift truck or electric pallet truck can be retracted. The two of the tunnel-like space 1.5 or 1.6 flanking careers 1.1 . 1.2 respectively. 1.3 . 1.4 define a lane for a trolley to be pushed up 2 , The trolleys intended for the pallet P. 2 preferably each have two non-steerable wheels (fixed castors) 2.1 and two steerable wheels (castors) 2.2 on.

The pallet P has profiled guides for the wheels 2.1 . 2.1 the trolley (frame trolley) 2 , The guides are partly due to the profile of the main body (beam) 1 and also with attached guide rails 3.1 . 3.2 realized. The pallet P or the profiled basic body 1 has substantially horizontally extending surface parts 1.7 on, preferably resting directly on the floor or the storage area. The serving as raceways surface parts 1.7 are with substantially vertical surface parts 1.8 over obliquely angled surface parts 1.9 directly connected in one piece. The vertical surface parts 1.8 are over substantially horizontally extending central webs 1.10 integrally connected. The vertical surface parts 1.8 and the horizontally extending central webs 1.10 limit the tunnel-like spaces 1.5 . 1.6 for holding the forks of a forklift.

Each of the tracks 1.1 . 1.2 . 1.3 . 1.4 is by at least one parallel to the longitudinal center axis of the pallet P extending bar 3.1 and by at the end subsequent shorter bars 3.2 limited. The shorter bars 3.2 are opposite to the at least one parallel to the longitudinal center axis of the pallet P extending bar 3.1 angled and define a funnel-shaped inlet area 03.03 for the wheels of the on the pallet P aufzuschiebenden trolley 2 , The edges of the main body 1 are at the funnel-shaped inlet area 03.03 or between the obliquely angled surface parts 1.9 and the shorter bars 3.2 the raceways beveled or chamfered 3.4 Mistake. The distance between the parallel to the longitudinal center axis of the pallet P running bar 3.1 and the lower crease line 1 .11 of the obliquely angled surface part 1.9 is slightly larger than the wheel width of the wheels 2.1 . 2.2 the pushed-on trolley 2 ,

In the vertical surface parts 1.8 the pallet P are aligned through holes 1.12 cut out. The passage openings 1.12 preferably have a substantially rectangular contour. They extend from the obliquely angled surface parts 1.9 up to or near the underside of the horizontal center bridge 1.10 , Through the openings 1.12 In particular, straps (strapping bands) for securing small load carrier containers can be passed, which are stacked on the recorded on the pallet P trolley 2. The aligned through holes 1.12 are arranged so that they are between the wheels 2.1 . 2.2 of the secured on the pallet P trolley 2 are there or the largest area of the opening 1.12 located (compare 1 and 2 ).

The pallet P of the invention can from both end faces, that is, from both ends of the raceways 1.1 . 1.2 . 1.3 . 1.4 out with (loaded) trolleys 2 be loaded and unloaded. The pallet P is per pair of tracks 1.1 . 1.2 and 1.3 . 1.4 or lane with a blocking device 4 for blocking the suspended trolleys 2 Mistake. The respective blocking device 4 comprises two arranged at the ends or end faces of the pallet P end rotary latch 4.1 . 4.2 and an inner or middle rotary bolt disposed between these ends of the pallet 4.3 , The end turnstile 4.1 . 4.2 and the inner rotary latch 4.3 grab in their blocking position on end faces 2.3 of frames or platforms of suspended trolleys 2 at.

The end turnstile 4.1 . 4.2 are via couplings 5 with the inner rotary bolt 4.3 coupled. The couplings 5 are designed such that upon actuation of one of the end rotary latch 4.1 or 4.2 the inner rotary latch 4.3 is mitbetätigt, but without the other end rotary latch 4.2 or 4.1 to press. This remains as a stop for the aufzuschiebenden trolley 2 stand. The respective coupling 5 is from a driver 5.1 and a form-fitting connected, relative to the driver 5.1 movable stop 5.2 educated. It is designed as a plug-in coupling and a torsion bar 6 with one of the end turnstile 4.1 or 4.2 connected (compare 5 to 7 ).

The driver 5.1 has a sleeve-shaped section 5.11 on, to which an axially projecting channel-shaped extension 5.12 integrally connects. The movable stop 5.2 the coupling also has a sleeve-shaped section 5.21 and an axially projecting channel-shaped extension 5.22 on. The inner radius of the respective sleeve-shaped section 5.11 . 5.21 preferably corresponds to the inner radius of the channel-shaped extension 5.12 . 5.22 , The extent or arc length of the extension 5.12 of the driver 5.1 For example, is about 180 °, while the extent or the arc length of the extension 5.22 movable stop (turn stop) 5.2 for example, about 90 °. The extension 5.22 of the movable stop 5.2 engages in the from the trough-shaped extension 5.12 of the driver 5.1 defined recess 5.13 one.

The driver 5.1 and the movable stop 5.2 are each on a torsion bar 6 . 7 attached and secured axially and radially. These are the sleeve-shaped sections 5.11 . 5.21 for example, with threaded holes 8th provided in the screws 9 , Preferably grub screws are screwed. The torsion bars 6 . 7 are in pivot bearings 10 . 11 , preferably plain bearings, mounted on the body 1 the pallet P are attached. The rotary bearings (plain bearings) 10 . 11 are provided with block-shaped brackets, the holes 12 . 13 , preferably threaded holes, for receiving fastening screws have. The holes 12 . 13 the brackets are thus aligned holes 14 . 15 in the main body 1 assigned to the pallet P. The inner rotary latch 4.3 carrying torsion bar 7 is about two pivot bearings or brackets 11 on the body 1 attached, with the inner rotary latch 4.3 between the pivot bearings (brackets) 11 is arranged. The torsion bar 7 extends through the sleeve-shaped portion 5.21 movable stop (turn stop) 5.2 the couplings 5 and stands with its ends opposite the channel-shaped extensions 5.22 axially in front, leaving it with its ends in the sleeve-shaped sections 5.11 the driver 5.1 plugged or inserted. Furthermore, in 6 to realize that the inner rotary latch 4.3 preferably with a spring 16 is provided by which it is biased in the blocking position.

In the illustrated embodiment, the couplings 5 , Torsion bars 6 . 7 and pivot bearings (brackets) 10 . 11 the respective blocking device 4 inside the tunnel-like space 1.5 or 1.6 the pallet P arranged. Accordingly, in the main body 1 the pallet P recesses 17 or through holes 18 designed so that the end turnstile 4.1 . 4.2 and the inner rotary latch 4.3 from a non-blocking position unhindered in the substantially upright blocking position and vice versa can be pivoted. The end turnstiles 4.1 . 4.2 associated recesses 17 are, for example, as frontal cutouts of the body 1 executed (compare 1 and 3 ).

At the end turnstiles 4.1 . 4.2 is each an operating lever 4.11 . 4.21 appropriate. The operating lever 4.11 . 4.21 is preferably about 90 ° relative to the associated end-side rotary latch 4.1 . 4.2 angled. The end turnstile 4.1 . 4.2 or the associated torsion bars 6 are preferably provided with locking elements, through which the end-side rotary latch 4.1 or 4.2 together with the inner rotary bolt 4.3 in its non-blocking, for example substantially horizontal position on the base body 1 can be secured against rotation. In addition, locking elements may be provided, through which the end-side rotary latch 4.1 . 4.2 and the inner rotary latch 4.3 in its blocking position on the base body 1 can be secured against rotation.

Claims (11)

Pallet (P) for transporting trolleys ( 2 ) with raceways ( 1.1 . 1.2 . 1.3 . 1.4 ) for receiving wheels ( 2.1 . 2.2 ) the trolley ( 2 ), on which at least two trolleys ( 2 ) are pushed one behind the other, at least one between the tracks ( 1.1 . 1.2 . 1.3 . 1.4 ) arranged tunnel-like space ( 1.5 . 1.6 ) for receiving forks of a forklift and at least one blocking device ( 4 ) for blocking the suspended trolleys ( 2 ), characterized in that the blocking device ( 4 ) at least two at the ends of the pallet (P), which at the same time the ends of at least one of the tracks ( 1.1 . 1.2 . 1.3 . 1.4 ), arranged end-side bars ( 4.1 . 4.2 ) and at least one between these ends of the pallet (P) arranged inner bolt ( 4.3 ), wherein the end-side bars ( 4.1 . 4.2 ) via couplings ( 5 ) with the at least one inner bar ( 4.3 ) and the couplings ( 5 ) are designed such that upon actuation of one of the end latches ( 4.1 or 4.2 ) the at least one inner bar ( 4.3 ) mitbetätigt and the other end-side bar ( 4.2 or 4.1 ) is not mitbetätigt. Pallet (P) according to claim 1, characterized in that the end-side bars ( 4.1 . 4.2 ) and the inner bar ( 4.3 ) are each formed as a rotary latch. Pallet (P) according to claim 1 or 2, characterized in that the respective coupling ( 5 ) from a driver ( 5.1 ) and a form-fitting connected, relative to the driver ( 5.1 ) movable stop ( 5.2 ) is formed. Pallet (P) according to one of claims 1 to 3, characterized in that the inner bar ( 4.3 ) with a spring ( 16 ), through which the inner bar ( 4.3 ) is stretched in a blocking position. Pallet (P) according to one of claims 1 to 4, characterized in that the respective clutch ( 5 ) via a torsion bar ( 6 . 7 ) with one of the end latches ( 4.1 or 4.2 ) or the inner bar ( 4.3 ) connected is. Pallet (P) according to one of claims 1 to 5, characterized in that the respective clutch ( 5 ) is designed as a plug-in coupling. Pallet (P) according to one of claims 1 to 6, characterized in that the end-side bars ( 4.1 . 4.2 ) and the inner bar ( 4.3 ) in their respective blocking position on end faces ( 2.3 ) of frames or platforms of the suspended trolleys ( 2 attack). Pallet (P) according to one of claims 1 to 7, characterized in that each of the raceways ( 1.1 . 1.2 . 1.3 . 1.4 ) by at least one parallel to the longitudinal central axis of the pallet (P) extending bar ( 3.1 ) and at the end subsequent shorter strips ( 3.2 ), the shorter bars ( 3.2 ) with respect to the at least one parallel to the longitudinal center axis of the pallet (P) extending bar ( 3.1 ) are angled and a funnel-shaped inlet area ( 03.03 ) for the wheels ( 2.1 . 2.2 ) of the on the pallet (P) aufzuschiebenden trolley ( 2 ) define. Pallet (P) according to claim 8, characterized by a profiled basic body ( 1 ), which along with the raceways ( 1.1 . 1.2 . 1.3 . 1.4 ) strips ( 3.1 . 3.2 ) for guiding the wheels ( 2.1 . 2.2 ) the trolley ( 2 ) is provided. Pallet (P) according to claim 9, characterized in that the basic body ( 1 ) is made of a one-piece, formed sheet metal blank. Pallet (P) according to one of claims 1 to 10, characterized by horizontally extending surface parts ( 1.7 ) as careers ( 1.1 . 1.2 . 1.3 . 1.4 ) and vertically extending surface parts ( 1.8 ), which are used as careers ( 1.1 . 1.2 . 1.3 . 1.4 ) serving surface parts ( 1.7 ) over obliquely angled surface parts ( 1.9 ) directly with the vertically extending surface parts ( 1.8 ) are integrally connected.

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