BE1026947B1 - Improved slider lift with flat platform - Google Patents

Abstract

Improved slider lift with flat platform (3), containing a flat platform (3) with a base part (3a) pivotally mounted on a set of lifting arms (14) to allow the platform (3) to be moved in a horizontal position of use between a highest position and a lowest position with the platform (3) on the ground (8), the lifting arms (14) being mounted on a tail lift frame (12) that can be mounted under the overhang of the transport truck hatch and which is slidable between a transport position where the platform (3) has been retracted below the overhang of the transport vehicle and in an in-use position in which the base part (3a) of the platform (3) protrudes behind the loading floor, the platform (3) including a pivotable part (3b) mounted on the base part (3a) is mounted by means of a second pivot axis (19) above the base part (3a) and this part (3b) is pivotable into a transport position where the pivotable part (3b) is folded back to b and / or between the lifting arms (14).

Description

Improved slider lift with flat platform. The present invention relates to an improved sliding tipper with flat platform, Tail lifts are mounted on transport vehicles such as: trucks, trailers, trailers and the like and | are intended for the loading and unloading of goods, for which purpose | 10 the loading dump is provided with a loading platform which is 9 adjustable in height between a position on the ground floor 9 and a position in line with the loading viser of the | transport vehicle. | The goods are usually stacked on pallets which are manually driven on and off the platform 9 with the aid of a transpailet, or are loaded in rolling carts which are pushed on and off the platform.

Loading ramps are known in the form of so-called column lifts that are mounted at the back of the loading platform. These types of loading lifts have the disadvantage that they prevent access to the loading space without opening or lowering the column lift Le and make access to loading docks very difficult. Kciomlifts experience a lot of mechanical damage to loading docks, often very detrimental to the operating costs of the rolling stock. Unlike a column, the slider lift, when not in use, for example during transport or during loading and unloading from a loading bay, can be safely stowed under the chassis of the transport vehicle, the tail lift then being placed under the so-called overhang of the chassis. # pushed away, that is to say under the part of the {3 chassis that is behind the wheels but behind the | protruding, | Due to its concealed mounting, a slider loading tilt therefore has the following advantages: 9 10 = offers free access to the loading space of the transport vehicle at all times without the | it is necessary to have to use the tail lift for this and therefore without loss of time; 9 15 = makes reversing the transport vehicle | possible without the tailboard touching the loading quay and 9 therefore without mechanical damage occurring on the loading dock, as a result of which the ONnderdog cost of a slider loading is significantly lower than in the case of a column lift. There are also other differences in types of tail lifts.

Most types are equipped with a conical platform that tapered from the Transport Vehicle to its rear end, whereby the platform becomes horizontal in its highest position at the level of the loading floor of the transport vehicle and in all positions between this position and its position on the ground. held to prevent the Load from shifting or rolling in the platform during

{3 BE2019 / 4999 | Just lowering and raising the platform, When the platform hits the ground, the platform is then tilted 9 so that it lands with its bottom side, and more especially {5 with its point, on the ground where the platform 9 is slightly driven with its top side is to put it on- | and driving off the load on the ground floor. easier | expired. One speaks of the skew of | the platform.

# 12 9 Some types of tail lifts have, in contrast to the 9 tail lifts with a conical platform, a flat platform with 9 a side surface that can be used in all positions when loading and unloading | always remains horizontal, so also in particular when the platform rests with its underside on the ground.

9 This type of loading skip is said to have a flat “level-9 ride” course between the loading vessel and the ground.

9 20 Such a flat platform is usually equipped with a folding ramp to facilitate entry and exit on the ground floor, this leveling wedge being able to be raised during the lowering and lifting of the load to act as a roll-up stop to prevent it from falling. the Load could roll or slide off the platform during this movement. A flat platform has the advantage that there is no skewed counting on the ground and that rolling carts therefore have no tendency to roll off the platform and that rolling carts with ser Load with a dangerously high

A BE2019 / 4999; center of gravity less or no risk of overturning | tilt when tilting. 9 Although the majority of the 9 5 Tippers sold worldwide are of the conical type, they are flat; piatforms in certain countries such as the UK, Ireland and the US are very popular with hauliers that transport trolleys or other goods that do not have their own safety or brake. 10 Almost all types of column lifts and a minority of the 9 slider roofs are equipped with a flat | piatform.

LS Column lifts are equipped with a flat platform and 9 thus exhibit the aforementioned advantages of a flat platform, but legally also possess the aforementioned disadvantages of a column lift due to their mounting at the rear of the loading body, which prevents access to the loading space and makes access to loading docks very difficult and run a high risk of damage when docking at loading and unloading quays.

Bottom slider flaps are particularly popular in the mid-to-heavy-duty segment of the transportation industry, as these tail lifts are securely tucked under the vehicle chassis with the resulting benefits as described above. 50 Most slider lifts are equipped with a conical platform.

| An exception to this is one special type of tail lift: that is equipped with a flat platform, Notwithstanding the advantages of a flat platform for trolleys and rolling | load, this type of tail lift has a significant drawback, [5 namely the long overhang under the vehicle chassis | necessary for its mounting.

3 In many cases the long overhang is disadvantageous for the # axle load and the maximum Permitted mass of the | 18 vehicle. 9 Due to the long overhang required by the known 9 slider lift lifts with a flat platform, 9 mounting on trucks / semi-trailers / trailers with a | 15 current or short overhang excluded so far. 9 Ex also exist tyces of double-glazed sliding tipping that are suitable for a very short overhang and which are for instance provided with a 9 20 three-part platform that can be napped in its stowed position | can be folded, but these types can / could up to | are not yet combined with a flat platform, in the US there are also tuck-away lifts with a flat platform that can be mounted within a reasonably limited overhang and that are fixedly mounted on the vehicle with a loading floor extension that extends the overhang, as it were. version of flat folding loading flaps, the pivot points of the lifting arms lie above the loading surface of the platform, which pivot points are above the | Extend the load cell and stow it while driving | are in storage compartments that are on the load floor extension | mounted and protruding above the charging vioser. 9 This latest construction has some important drawbacks: | = the fact that the storage compartments can be an obstacle | form the platform and the loading floor when loading and unloading the cargo between 9 18; | the risk of tripping over the 9 storage compartments during loading and unloading; 9 = the frequently occurring problem that a so-called dock levaller is applied to the loading quays in the form 9 15 of a drive-over platform that can be tilted down from the iOS quay to the 9 loading quay to close the gap between the loading quay and the vehicle and the level difference between the bellows, but where the problem arises that the standard drive-over plates are wider than the free distance between the storage compartments lying on top, so that the crossing plate cannot be completely lowered to the loading floor and loading and unloading is made difficult or impossible The object of the present invention is to provide a solution to one or more of the aforementioned and other drawbacks for a flat platform slider dump truck which can be mounted within a very short distance of a transport vehicle.

| To this end the invention relates to an improved slider lift with a flat platform, comprising a flat platform with a base part which is hingedly mounted on a lifting arm of a lifting mechanism in the platform during | & use in a horizontal position of use in the hocote to be able to move 9 between a highest position with the loading surface of a base part in the extension of the | loading vicer of a transport vehicle and a lowest position | with the platform on the ground; where the lifting arms dcor | 19 are pivotably mounted by means of a most pivotal pivot shaft 9 on a tail lift frame which, by means of a cell line | can be mounted under the construction of the transport vehicle 9, whereby the loading / tilting frame is slidable between 9 a Lraneport position in which the lifting arms and the platform are retracted below the overbuilt of the transport vehicle and a position of use in which the base part of the platform protrudes behind the loading floor, with as a feature that, in addition to the base part, the platform also includes a pivotable part which is mounted on the base part by means of a second pivot axis located above the base part, this part being pivotable between a position of use, the loading surface of the pivotable part being with respect to the loading surface of the fixed part protrudes backwards and in line with it and a transport position in which the pivotable part is sewn back to above and / or between the lifting arms.

Due to this construction, the slider lift can be folded into a transport position with limited length, whereby the course to be traveled for sliding in the slider tailgate under the overhang is significantly less than with the known slider lifts, which: results in a much shorter installation space under the { vehicle chassis, a more favorable axle load and an increased {maximum permissible mass for the vehicle, as well as in | 5 time savings during commissioning. # Due to the position of the second pivot point, the pivotable part of the platform # can be pivoted over and past the base part between the lifting arms to rhine | 19 transport position. 9 At the same time, the entire construction can also be very high in height compact, so that little installation height is required for traveling 9 and the ground clearance under the tail lift remains mazimal, | 15 | Thanks to the larger center of the second hinge compared to a conventional flat hinge, the 9 hinge offers great strength and support for higher | lifting capacities from 2000 to 2500 kg. 9 20 Due to its compactness, it is not necessary to extend the overhang by means of a loading floor extension as is usual in the US.

Since in the transport position the first pivot axis of the base part on the lifting arms does not protrude above the loading floor, it is also not necessary to provide upwardly protruding storage compartments Le which pose a risk of tripping and which also form an obstacle on the so-called dock levellers of the loading. - and lower unloading bays completely to the loading floor,

| For the compactness of the construction, a short base part is preferably used with a length measured in the longitudinal direction of the loading floor of the transcort vehicle between 25 and 35 cm, preferably with a length of approx. 5 at the 30 on.

Preferably, the pivotable part of the platform [is made in two parts, with two sub-parts pivotable relative to each other about a central pivot axis that allows the pivotable part of the platform from its | the use position can be folded twice into a transport position 9 with the sides of both sub-parts of the pivotable part 9 facing each other. In this way, the platform can be 9 more compact in its transport position under the overhang of a transport vehicle | are pushed away. Another advantage is that much less space must be provided under the overhang to allow the platform to be rotated from its use position to its transport position and vice versa. This means that for the installation of a slider loading lift according to the In the invention, much less or no material must be removed at the location of the overhang, such as that the known underfold tipping with conical or flat platform is often necessary, whereby in the case of the invention the construction 32 and container remain much more stable and so that the value of the chassis is retained or as good as.

| In order to be able to easily move the load on and off the platform, the platform is preferably provided at its free end with a shear which, in the operating position of the platform, slopes towards the free end of the platform or is the platform alternatively fitted with a ramp attached to the free | end of the platform is hinged and | which is pivotable to a position where the | oprijklen with its point resting on the ground, | 10 9 In the case of a hinged ramp, it is preferred that this ramp can also serve as a brake or roll-off protection to prevent a rolling load 9 from accidentally rolling off the platform, where the # 15 ramp is in the position of use. the platform can be pivoted up to a lockable upright position.

A slider lift according to the invention can be dimensioned such that its substructure length in the 2D transport position does not exceed 1350 mm for a flat platform with a length of 1700 m in its position of use.

The invention also relates to a transport vehicle equipped with a 253 under-loading ramp according to the invention which in its transport position is completely slid away under the overhang of the transport vehicle, the length of the overhang being no greater than 1350 mm for a length of the platform. from 1700 mm,

; 44 BE2019 / 4999 With the insight to better understand the characteristics of the invention | below, by way of example without any limiting character, some preferred embodiments 9 are described of an improved slider loading ramp with a platform according to the invention. with reference to the accompanying drawings, in which: {figure 1 shows schematically and in side view an improved [slider lift with flat platform according to the invention as mounted co sen | transcort vehicle and with the platform in the highest 9 position of use for loading and unloading; | figure & represents a top view according to arrow F2 | in Figure 1; {15 figure 3 shows the slider loading flap of Figure 1 9 with the platform in the lowest operating position on the | ground 9 figure 4 shows the bottom sliding loading ramp of figure 1 in 9 its transport position hidden under the loading vessel; | Figures 5 and 2 represent two positions at the transition from the transport position to the 9 use position of the slider loading lift of figure 9; figure 7 represents the platform to a larger scale: that 9 is indicated by F7 in figure 5; Figure 8 shows an exploded view of the platform of Figure 7; figure S represents the part indicated by F5 in figure 7 and this in different positions;

figure 10 shows in perspective a detail of another embodiment of a slider loading ramp according to the invention; {figure 11 shows the view of figure 10, but with | 5 omission of the part which is with Fil in figure 10 | indicated, # In figquur 1 the overhang of a chassis 1 of a | transport vehicle under which ser 9 1G under-shelter loading flap 2 according to the invention is attached 9 which is provided with a flat platform 3 for loading and unloading | Unloading a load from and into the transport vehicle. | The slider lift Z is shown in this figure in its position of use, in which the loading surface 4 of the platform 93 is in the highest position in line with the loading floor 5 of the transport vehicle. The platform 3 comprises a base part 32a and a pivotable part 3b coupled thereto, which are mutually aligned with their loading plane Za and 4b, respectively, and which are of flat design, in other words the bottom side 6 is flat and parallel with the loading plane 4 to the top of the platform 3.

The slider loading platform is provided with a lifting mechanism 7 to enable the platform 3 to be moved parallel to itself in height during use in a horizontal position of use, between a highest position as shown in figure 1 and a lowest position with the platform 3 with the flat underside. 6 resting on the ground

| 13 BE2019 / 4999 ground 8 as shown in figure 3. | At the edge of the free end 9 of the platform 3 is | in the case of the example shown, a | a ramp 12 provided that at the free end of the | platform 3 is hinged and which is hinged 9 to a position where the ramp 10 is in the lowest | position of the platform 3 with its point on the ground 8 | as shown in figure 3 to facilitate the loading and unloading of the goods into and out of platform 3, 9 this ramp 10 can be rotated up from the position of use of figure 2 to a lockable erected position as shown in Figure 1, where the ramp 9 15 10 must prevent goods on the platform 3 from unwinding or sliding off unintentionally, The ramp 10 can also be pinned before transport Lot against the loading area 4 of the clatform 3 as in a second position shown in fiquur 3, Instead of the ramp 10, the platform 3 can be provided at its free end 9 with a shear 11 as shown in broken line in the position of use of figure 3 which slopes towards the free end of the platform 3, The base part 3a of the platform 3 is much shorter in the longitudinal direction of the loading vehicle 5 or thus in the direction of travel of the transport vehicle than the hinged part 3D,

: The basls part 38a is for example 25 to 35 cm long, at | preferably about thirty cm long, while the pivotable part 3b is, for example, 140 cm long, so that the total length # of the platform 3 in its position of use is, for example, 165 à | 5 is 175 cm. | The lifting mechanism 7 of the platform 3 is mounted on a Tipping Loading Frame 12 which is suspended from sliding plates 12 'which are slidably mounted in a guide 13 in the form of sliding tracks with which the slider loading dump 29 is mounted under the overhang of the chassis 1 This lifting mechanism 7 includes a pair of lifting arms 14 pivotally mounted at one end on the aforementioned seed valve frame 12 and those at their other end | are hingedly connected to the base part Za of the platform 3 by a model of a first pivot shaft 15 mounted above the side surface £ a of the base part 3a between the two upright ears 16 of the base part Ga, approximately half the length of the base part Yes Furthermore, the lifting mechanism 7 comprises a pair of stabilizing bars 17 pivotally mounted on the tail lift frame 12 at one end and pivotally coupled to the base portion 3a at the other end by means of a pivot axis 18 located vertically below the center pivot axis 15 and for height of a side edge of the base part Za is provided. 3D The pivot points of the lifting arms 14 and of the stabilizing bars 17 are also located at the pivot points of a

1st BE2019 / 4999 | fictive parallelogram so that when the platform 3 moves up and down # the base part 3a is always | remains parallel to itself. The lifting mechanism 7 comprises one or more lifting cylinders or other drive means, not shown in the figures. The pivotable part 3b of the platform 3 is connected to the base part 3a by means of a two-third | pivot axis 19 extending above the loading plane of the base part. 3a and is located between this | The loading surface da and the first pivot shaft 15 is located, 9 The second pivot shaft 19 is journalled in flanges 20, which in | the position of Figure 1 above and outside the loading surface 4b of the pivotable part 3b protruding in the direction of and 9 over the base part 38a. | The second pivot axis 19 is positioned such that the base part 3a with its rear edge 21 forms a stop for the opposite edge of the pivotable part zb when it is tilted from its transport position to its use position.

A torsion spring 22 is provided between the base part 3a and the pivotable part 35 of the platform 3 to support and facilitate manual unfolding and folding of the pivotable part 3b Le. Preferably, although not necessary, the pivotable part 3b of the belt is 3 in two parts with Lwee subparts 3b 'and 357 ”which are compared

| are pivotable from each other about a central pivot axis 23 which allows the pivotable part 3b of the platform to be folded 3 to double together into a transport position as shown in figures 4 and 5 with the loading surface 4b of; 5 both subparts 3b "and 3b" facing each other. | The pivotable part 3b is pivotable between a [use position where the iaadviak Ab var net | pivotable part 3b relative to the loading surface 4a of 9 the base part Za protrudes rearwardly and in its extension as shown in figures 1 and 3 and 9 transport position in which the pivotable part 3b is in | its folded half position is plotted back to above # and / or between the lifting arms 14 as shown in the figure

5. The tail lift frame 12 is preferably provided with drive means, for example in the form of double-acting cylinders 26 or a hydraulic motor 2%, to be able to slide the tail lift frame 12 between an extended position as shown in figure 5, whereby the base part 3a of the platform 3 protrudes behind the loading floor 5 and a retracted Transport position in which the lifting mechanism 7 together with the closed platform 3 is retracted under the overhang of the chassis 1 as shown in figure 4. The operation of the slider loading lift 2 is very simple and as volat,

: 2 ° BE2019 / 4999 {For the use of the slider lift 2 for loading and unloading, the loading tipping frame 12 is fixed by means of the | slide plates 12 ° from the transport position of figure 4 to | pushed backwards to the position shown in Figure 5, where the | 5 lifting arms 14 lie practically horizontally and the folded pivotable part 3b rests on a support roller 24 9, which is mounted on the end of a support beam 25 mounted on the tail lift frame 12 9, then the platform 3 is lowered by means of the mechanism. until the base part Za comes to the ground 8, as shown in = figure ©, whereby just 9 folded in half hinged part 3b becomes but up | tilted, supported by the supportroi Zé4. 9 Subsequently, the hinged part 3b 9 folded in half is tilted backwards and this folded part 35 | then manually opened up to the position of figure 3, after which, if necessary, the ramp can also be tilted away from the transport tooth into the position of figure 3.

In this position, for example, rolling carts can be driven onto the platform, after which the ramps 10 can be locked in an upright position to prevent the carts from rolling on the platform 3.

Subsequently, the platform 3 can be raised to the position of figure L in order to drive the carts from the platform 3 into the cargo space of the transport vehicle.

Afterwards, the platform 3 can be lowered back to the position of figure 3 in order to be able to load a next load. After all have been loaded, the slider tipper can be brought back into its transport position of figure 4 by the | To carry out the aforementioned actions in reverse order, 9 It goes without saying that the pivotable part 3b of the platform can also be made in one piece if a short platform 3 is sufficient in combination with a short available overhang.

In Figures 10 and 11 an alternative embodiment of the torsion spring 22 is shown to support and facilitate manual unfolding and unfolding of the pivotable portion 3H Le, and in this case, between the torsion spring 22 and the pivotable portion 3b of the platform 3, a additional lever 27 is provided which is rotatably arranged around the second pivot axis 19% of the pivotable part 3b and which engages with a naked end on a cam 28 fixed on the pivotable part 3b of the platform 3. Zen advantage of this embodiment is that a shorter torsion spring 22 can be used than in the case without a lever and that the torsion spring is deformed less in use.

The present invention is by no means limited to the embodiments described by way of example and shown in the figures, but an improved slider loading drawer with a flat platform according to the invention can be used in all kinds of ways. 5 shapes and sizes can be achieved without leaving the | within the scope of the invention,

Claims (1)

| 50 BE2019 / 4999 conclusions. | Ll. Improved slider lift with flat platform {3}, 9 5 comprising a flat platform {3} with a base part (Za} which is | pivotally mounted on a set of lifting arms (14) of | a lifting mechanism {7} to move the platform (3) during use | be able to move vertically in a horizontal position of use 9 between a highest position with the loading surface {d4a) 9 10 of the base part (3a) in line with the loading floor | {53} of a transport vehicle and a lowest position with the platform {3} on the ground (8), wherein the lifting arms {14} are pivotally 9 mounted on a loading tipping frame {12} by means of a first pivot shaft (15) that can be mounted under the overhang of the transport vehicle 9 by means of a guide (13), wherein the tail lift frame (12) is slidable between a transport position in which the lifting arms {14} and the platform {3} reach under the overhang of the transport vehicle are retracted and in a position of use in which the D base part {3a} of the platform {3} protrudes behind the loading floor, characterized in that the platform (3) and the base part (3a) also comprises a pivotable part (30) which is attached to the base part. (3a) is not mounted by means of a second pivot axis (19) located above the base part {3a}, this part {3b} being pivotable between a position of use, the loading surface (4b) of the pivotable part (36) being compared to the l the base (da) of the base part (3a) protrudes backwards and in line with it and a transport position in which the pivotable part (3b) is folded back to above and / or between the lifting arms (14). {2. Slider loading cradle according to claim 1, thereby | characterized in that the first pivot axis (15) by which the base part {Za} of the platform (3) is pivotable on the | lifting arms (14) mounted above the loading surface (da) | 5 of the base part {3a} and that the second pivot axis 9 {19) of the pivotable part (3b) is in the upper part | seen between the loading surface {da} of the base part (3a) and | the first pivot axis (15) of the base part (3a) is on the lifting arms {14}, | 3.7 Slider lift according to claim 1 or 2, characterized in that the hinged part (3b) of the platform | (3) is connected to the second pivot axis {19} by means of 9 flanges (20) protruding above the loading surface (4b) of the pivotable part (3b) of the platform (3), the position of the second pivot shaft {19) such | Le that the base part (3a} forms a stop for the pivotable part {363 when it is tilted from its transport position to its position of use, 4. Slider lift according to any one of the preceding claims, characterized in that the second pivot axis (19) is approximately half length of the base part (32) is situated. 3.7 Slider tail lift according to any one of the preceding claims, characterized in that the base part (yes; is a short part with a length measured in the longitudinal direction of the loading vehicle {5} of the transport vehicle between 25 and 35 cm, preferably with a length of approx. and at the 30 cm. {29 BE2019 / 4999: 6.7 Slider loading tilt according to one of the preceding claims, characterized in that the pile driver (7) comprises a stabilizing bar (17) between the loading frame | {12} and the base part (3a), the base part (3a) 9 being pivotally connected to the stabilizing bar (17) by means of a third pivot axis (18) located | vertically below the first pivot axis {15}. 9 7. Slider lift according to one of the preceding | 12 claims, characterized in that between the base part | (yes) and the pivotable part (35) of the platform (3) 9 a torsion spring {22} is arranged, 9 ZE. Slide-down loading ramp according to any one of the preceding claims, characterized in that between the torsion spring 9 (22) and the pivotable part (3b) is a lever (27) | arranged that is rotatable about the second pivot axis 9 {15) of the pivotable part {3b} of the platform (33 9 and which engages a cam of this pivotable part (35) | 20 at a distance from the second pivot axis (19) SS. Sliding tailgate according to one of the preceding claims, characterized in that the pivotable part {3b} of the platform (3) is made in two parts with two sub-parts {3b and 3657 ”) which are pivotable relative to each other about a central pivot axis (23) which allows the hinge arm desl {3b} of the platform (533 to be doubled up to a transport position with the opening of both subparts (357 and 36 ”) of the pivotable part {3b} facing each other. Slider lift according to any one of the preceding claims, characterized in that the platform (3} is provided at its free end (3} with a chamfer (13) {which slopes downwards in the operating position of the platform (3}) | 5 towards the free end (8) of the platform (3). i. Sliding tailboard according to any one of claims 1 to 9, characterized in that the platform (2) is provided with a ramp {10} which is attached to the free end (9) of the platform (3) is hingedly arranged and which is pivotable into a position in which the ramp 9 (10) rests with its point on the ground (8). 12. Under-cover flap according to claim 11, characterized in that the ramp {10} can be turned around in the position of use of the platform {3} to a lockable erect position. Slider tailgate according to claim 11 or 12, characterized in that the ramp (10) can be pinched up to or almost to the end of the loading surface (4) of the platform {3}, 18, - Slider slide tailgate according to one of the preceding claims, characterized in that the substructure length of the slider loading dump {2} in its transport position does not exceed 1350 mm for a flat platform {3} with a length of 1700 m in its use position. id. Transport vehicle, characterized in that it is equipped with a sliding lid {2} according to one of the | the preceding claims that in its transport position completely slid away under the overhang of the Transport vehicle, whereby the length of the overhang does not exceed 1350 mm for a length of the platform (3) of 3 5 1700 mm,