EP0785167A1 - Side-shifting equipment for lift trucks - Google Patents

Abstract

Disclosed is a lateral shifting system for a floor transport vehicle, which has a lift carriage with a base frame with one upper and one lower hook edge for mounting fork tines and has a lateral shift frame. The lateral shift frame has two horizontal frame members with, on the one hand, cross sections which grasp the edges of the base frame and on the other hand form edges for fork tines, and a double-acting hydraulic driver for shifting the lateral shift frame. To reduce weight, tolerances and difficulty in assembly, the lower horizontal frame member can be swung in back of the bottom edge of the base frame by means of an uptumed cross-sectional extremity, and for a sliding, form-fitting combination of base frame and lateral shift frame, U-shaped antifriction bearings are inserted from the side between the lower edge of the base frame and the lower horizontal member of the lateral shift frame.

Description

The invention relates to a side-shift device for industrial trucks, in particular for forklifts, which have a lifting slide with a base frame, each with an upper and a lower gripping edge for attaching fork tines, with a first hook profile being placed on the upper gripping edge, secured against transverse displacement which is attached to a hydraulic drive and on which a side shift frame can be pivoted counter to the direction of travel by means of its upper horizontal profile and can be moved transversely to the direction of travel by the hydraulic drive, and wherein a lower horizontal profile of the side shift frame can be connected to the lower gripping edge of the base frame so that it can be moved transversely to the direction of travel

Such side shift devices are used to compensate for driving or positioning errors of the operator of the industrial truck when picking up and / or depositing a load by transverse displacement of a load suspension device, which is or will be referred to below as representative of other forms of load suspension devices as fork tines. Starting from a central position, the transverse displacement can take place on both sides by approximately 15 to 20 cm, although this dimension is not critical. Without a sideshift device, the driver would have to be compensated by moving the truck back and forth, possibly several times.

The said side shift devices are therefore used between the base frame of a vehicle-side lifting carriage and the fork tines and have for this purpose a side shift frame, the upper and lower gripping edges of which coincide with those of the base frame, so that the fork tines alternatively both on the base frame of the lifting carriage and can be placed on the sideshift frame. The geometric shape and the spacing of the gripping edges in question are generally standardized.

Such sideshift devices are known from DE 27 16 668 C2 and the applicant's company publication "Clear View Sideshift T 151 P2 and T 151 P3" from 1994.

The base frame, which is often referred to as the base plate, has upper and lower horizontal profiles, the height dimensions of which are usually a multiple of the thickness. A stiffening is carried out by vertical profiles and the attachment to said lifting carriage. DE 27 16 668 C2 shows that the cross section of at least the lower horizontal profile of the sideshift frame is at least similar to the horizontal profile of the base frame. This makes the sideshift frame, which is subject to bending and twisting, heavy, and the known horizontal profiles additionally obstruct the driver's view, especially in the known solutions, the hydraulic drive required for the transverse displacement additionally obstructs the view. For safety reasons, it is essential for the driver to have an overview of the load to be transported.

The company brochure mentioned above also shows that the upper and lower horizontal profiles of the sideshift frame are at least geometrically similar to those of the base frame. The upper horizontal profile is screwed to two separate and upwardly projecting hydraulic cylinders, the plungers facing each other of which act on a fixed stop on the base frame, so that the sideshift frame can be moved in the transverse direction together with the hydraulic cylinders. This known solution is also complex to manufacture and has a high weight, which is annoying insofar as the sideshift frame increases the so-called stem dimension and, due to the heavy weight, additionally loads the front axle of the industrial truck. The driver's view is also restricted in this solution.

From GB 20 99 787 A, US 53 68 435 and FR 24 37 374 U it is known, first on the base frame of a lifting carriage, a holding profile with a cylindrical outer surface and then an upper horizontal profile of a sideshifter frame provided with a cylindrical inner surface to put on, the cylinder surfaces forming a joint and a sliding bearing. Different means are provided for locking against swinging up of the sideshift frame. In all cases, the hydraulic drives are articulated and have only one piston rod.

The device according to GB 20 99 787 A has on the lower horizontal profile two hooks which can be pivoted about joint blocks and which have to be secured by pins after being pivoted into the locking position. Both horizontal profiles have massive cross sections and the cylindrical inner surface the upper horizontal profile is part of a welded-on U-profile. The production is complex and the weight is high.

In US 53 68 435 only the upper horizontal profile is designed to save weight, and the locking against pivoting up takes place by means of hooks which are vertically adjustable between L-shaped projections and can be fixed by means of tensioning screws. This increases the distance between the base frame and the sideshift frame. Although this document also discloses plastic sliding blocks, these are held by the L-shaped projections and an additional angle profile and therefore cannot be inserted from the side. Assembly and disassembly are correspondingly complex.

In the FR 24 37 374 U, both horizontal profiles of the sideshift frame also have massive cross sections similar to those of the base frame. The lock against swinging up of the sideshift frame consists of two L-shaped angle pieces, with each of which a claw is screwed. This also disadvantageously increases the distance between the two frames and thus the lever arm. In addition, the view is severely affected by the two frames.

GB 20 07 186 A and DE 23 39 431 A1 do not disclose any pronounced pivot bearings for placing the sideshift frame on the base frame of the lifting carriage.

The device according to GB 20 07 186 A has an intermediate frame between the base frame and the sideshift frame, which carries the hydraulic drive. This makes the distance between the base frame and the sideshift frame particularly large. In addition, two protruding L-shaped guide rails are attached to the intermediate frame, and the side shift frame has two additional protruding L-shaped guide rails in a complementary arrangement. To prevent the intermediate frame from swinging up relative to the base frame, there are two hooks, the guides of which extend over the entire Extend the height of the intermediate frame and which must be locked by pins. The sideshift frame can only be pushed onto the intermediate frame from the side anyway, which is difficult because of the tendency to tilt. This arrangement has a particularly unfavorable weight and the view is almost completely blocked.

As far as DE 23 39 431 A1 discloses a sideshift frame with two horizontal profiles, these have a small cross-sectional area in the form of an "h" and a low weight, but the bending stiffness is impaired thereby, which is disadvantageous in the rough operation of industrial trucks. Sliding the sideshift frame onto the base frame is also only possible from the side. The vertical profiles of the sideshift frame are arranged behind the base frame, so that either the displacement path is limited or the fastening distances of the profiles of the base frame must have an unfavorable distance from one another. In addition, the view is significantly impeded.

The invention is therefore based on the object to improve a side shift device of the type mentioned in such a way that the number of parts, the processing and assembly costs and the tolerances, the front dimension and the weight are reduced.

• a) daß das untere Horizontalprofil des Seitenschieber-Rahmens ein fest angesetztes, nach oben gerichtetes Querschnittsende besitzt, das hinter den unteren Greifrand des Grundrahmens einschwenkbar ist,
• b) und daß zur formschlüssigen Verbindung von Grundrahmen und Seitenschieber-Rahmen gegen eine Schwenkbewegung des Seitenschieber-Rahmens um sein oberes Horizontalprofil in Fahrtrichtung zwischen den unteren Greifrand des Grundrahmens und das untere Horizontalprofil des Seitenschieber-Rahmens U-förmige Gleitkörper von den seitlichen Enden des unteren Horizontalprofils her einschiebbar und gegenüber diesem festlegbar sind.

The object is achieved in the side shift device specified at the outset according to the invention in that

• a) that the lower horizontal profile of the sideshift frame has a firmly attached, upwardly directed cross-sectional end that can be swung in behind the lower gripping edge of the base frame,
• b) and that for the positive connection of the base frame and sideshift frame against a pivoting movement of the sideshift frame around its upper horizontal profile in the direction of travel between the lower gripping edge of the base frame and the lower horizontal profile of the sideshift frame U-shaped sliding body from the lateral ends of the lower Horizontal profile can be inserted and fixed relative to this.

This completely solves the task at hand and, in particular, simplifies and simplifies assembly: after attaching the hook profile with hydraulic drive and the sideshift frame, this is brought into its operating position by gravity. Then only the sliding bodies are inserted and fastened from the sides, and the device is ready for operation. Extensive manipulations from below the sideshift frame are at least largely eliminated. The number of parts has been reduced and thus the weight and the so-called stem dimension, i.e. the lengthening of the vehicle was reduced to a minimum. The sideshift device according to the invention consists of a modular system which, by appropriately changing the length dimensions of the individual profiles, enables the production of different sizes of sideshift devices.

It is particularly advantageous if the sideshift frame has two vertical profiles between its horizontal profiles, and if the hydraulic drive has two plungers which can be driven in opposite directions, the outer ends of which contact the inner surfaces of the vertical profiles.

In this case, it is not necessary to screw the plungers to the side shift frames, since tensile forces do not occur on the plungers and the driven plunger pushes the non-pressurized plunger into the cylinder.

In particular, assembly is greatly simplified, which will be discussed in more detail in the detailed description. This measure is also to be seen in contrast to the state of the art, in which the sideshift frame is connected to the base frame by metallic sliders, which have to be screwed to the sideshift frame from the rear, i.e. from a very unfavorable position . This advantageous solution can also be seen in contrast to the prior art, in which the complete sideshift frame has to be pushed onto the base frame from the side.

It is particularly advantageous if the upper edge of the upward-facing cross-sectional end of the lower horizontal profile is arranged below a horizontal plane lying through the lower edge of the downward-pointing cross-sectional end of the same horizontal profile.

In this way, the mounting on the lower gripping edge of the base frame can be carried out particularly easily and precisely with a given position of the lower gripping edge of the sideshift frame.

It is also advantageous if the horizontal profiles of the sideshift frame have a substantially S-shaped cross section and are at least partially mirror-symmetrical to a horizontal center plane (EE) of the sideshift frame, such that the one cross-sectional ends are directed towards one another and grip around the gripping edges of the base frame such that they can be moved horizontally and the other cross-sectional ends are directed away from one another and form gripping edges for fork tines.

The inventive design and arrangement of the two horizontal profiles and the vertical profiles increases their section modulus in the horizontal, diagonal and vertical directions and at the same time reduces the weight.

All in all, the task is solved in full, and the number of parts, the processing and assembly work is reduced while observing the smallest possible tolerances, and at the same time the field of vision is increased.

It is particularly advantageous if the cross sections of the horizontal profiles are circumscribed by a rectangle R1 or R2, the height H1 or H2 of which is less than their width B1 or B2. Despite the reduction in the height dimensions H1 and H2, resistance moments are generated in all conceivable directions of force, which enable the absorption of large loads. Nevertheless - given the distance between the horizontal profiles - the driver has a good view of the load.

It is particularly advantageous in the course of a further embodiment of the invention if the hydraulic drive is arranged on a hook profile that has a greater length than the length of a cylinder body of the hydraulic drive when the hook profile is positively placed on the upper gripping edge of the base frame against transverse displacement and when the upper horizontal profile of the sideshift frame is laterally displaceably placed on the hook profile, preferably with the interposition of corresponding sliding bodies.

It is possible to form the hook profile and the cylinder body in one piece as a cast body, but it is also possible, on the other hand, to form the cylinder body from a steel cuboid and to connect it by welding with a hook profile bent from sheet metal. The rigid connection of the hook profile and the cylinder body supports the upper horizontal profile of the sideshift frame over a very large part of its length, so that a possible deflection of the upper horizontal profile is additionally reduced.

Further advantageous embodiments of the subject matter of the invention emerge from the remaining subclaims.

Exemplary embodiments of the subject matter of the invention, their individual parts and their possible combinations are explained in more detail below with reference to FIGS. 1 to 17.

Figur 1

eine perspektivische Explosionsdarstellung der wesentlichen Teile eines ersten Ausführungsbeispiels einer Seitenschiebereinrichtung ohne den Grundrahmen des Hubschlittens,

Figur 2

eine teilweise geschnittene Seitenansicht des Gegenstands nach Figur 1 in Richtung des Pfeils II in Figur 1, jedoch mit dem Grundrahmen und in montiertem Zustand,

Figur 3

den Querschnitt des oberen Horizontalprofils des Seitenschieber-Rahmens in vergrößertem Maßstab in einem Rechteck R1,

Figur 4

den Querschnitt des unteren Horizontalprofils des Seitenschieber-Rahmens in vergrößertem Maßstab in einem Rechteck R2,

Figur 5

eine rückseitige Ansicht des Seitenschieber-Rahmens nach Figur 1 aus der Sicht des Fahrers eines Flurförderzeugs,

Figur 6

eine Draufsicht auf den Ausschnitt im Kreis VI in Figur 5 in vergrößertem Maßstab,

Figur 7

eine rückseitige Ansicht eines Gleitkörpers nach den Figuren 8 bis 11 in Richtung des Pfeils VII in Figur 8,

Figur 8

einen Schnitt durch den Gleitkörper in Figur 7 entlang der Linie VIII-VIII,

Figur 9

eine rückseitige Ansicht des unteren Teils eines zweiten Ausführungsbeispiels eines Seitenschieber-Rahmens analog Figur 5,

Figur 10

einen Ausschnitt aus dem Kreis X in Figur 9 in vergrößertem Maßstab,

Figur 11

einen Schnitt durch den Gegenstand nach Figur 10 entlang der Linie XI-XI,

Figur 12

eine rückseitige Ansicht eines als Gußkörper ausgebildeten Hydraulik-Zylinderaggregats nach Figur 1 mit Blickrichtung gemäß dem Pfeil XII in Figur 14,

Figur 13

einen teilweise geschnittenen Ausschnitt aus dem Kreis XIII in Figur 12 in vergrößertem Maßstab,

Figur 14

eine Seitenansicht des Gegenstandes nach den Figuren 12 und 13 in Richtung der Pfeile XIV,

Figur 15

eine teilweise geschnittene rückseitige Ansicht eines aus einem Quader und einem Hakenprofil zusammengesetzten Hydraulik-Zylinderaggregats analog Figur 12,

Figur 16

den rechten Teil von Figur 15 mit aufgesetzten schalenförmigen Gleitkörpern in vergrößertem Maßstab und

Figur 17

eine Seitenansicht des Gegenstandes der Figuren 15 und 16 in Richtung des Pfeils XVII in Figur 15.

Show it:

Figure 1

2 shows a perspective exploded view of the essential parts of a first exemplary embodiment of a side shift device without the base frame of the lifting carriage,

Figure 2

2 shows a partially sectioned side view of the object according to FIG. 1 in the direction of arrow II in FIG. 1, but with the base frame and in the assembled state,

Figure 3

the cross section of the upper horizontal profile of the sideshift frame on an enlarged scale in a rectangle R1,

Figure 4

the cross section of the lower horizontal profile of the sideshift frame on an enlarged scale in a rectangle R2,

Figure 5

2 shows a rear view of the sideshift frame according to FIG. 1 from the point of view of the driver of an industrial truck,

Figure 6

3 shows a plan view of the detail in circle VI in FIG. 5 on an enlarged scale,

Figure 7

8 shows a rear view of a sliding body according to FIGS. 8 to 11 in the direction of arrow VII in FIG. 8,

Figure 8

7 shows a section through the sliding body in FIG. 7 along the line VIII-VIII,

Figure 9

5 shows a rear view of the lower part of a second exemplary embodiment of a side shift frame analogous to FIG. 5,

Figure 10

a section of the circle X in Figure 9 on an enlarged scale,

Figure 11

10 shows a section through the object according to FIG. 10 along the line XI-XI,

Figure 12

2 is a rear view of a hydraulic cylinder unit according to FIG.

Figure 13

4 shows a partially cut section from the circle XIII in FIG. 12 on an enlarged scale,

Figure 14

12 shows a side view of the object according to FIGS. 12 and 13 in the direction of the arrows XIV,

Figure 15

12 shows a partially sectioned rear view of a hydraulic cylinder unit composed of a cuboid and a hook profile analogous to FIG. 12,

Figure 16

the right part of Figure 15 with attached cup-shaped sliding bodies on an enlarged scale and

Figure 17

a side view of the object of Figures 15 and 16 in the direction of arrow XVII in Figure 15.

In Figure 1, a sideshift frame 1 is shown, which consists of an upper horizontal profile 2 and a lower horizontal profile 3, both of which are firmly connected to one another by vertical profiles 4 and 5 at a distance from their ends. The upper horizontal profile 2 has an upward gripping edge 6 which is provided with a whole series of notches 7 for the positive insertion of fork tines, not shown. The lower horizontal profile 3 has a downward gripping edge 8, which also serves to hold said fork tines. From the ends, U-shaped sliding bodies 9 can be inserted into the lower horizontal profile 3, which will be discussed in more detail below. These sliding bodies 9 can be fixed in the lower horizontal profile 3 by screws 10, which will also be discussed in more detail below.

The sideshift frame 1 also includes a hydraulic drive 11 with a cylinder body 12 and two plungers 13. The cylinder body 12 is formed in one piece with a hook profile 14 as a cast body, which is explained in more detail below with reference to FIGS. 12, 13 and 14. The top of the hook profile 14 is spaced at intervals with shell-shaped sliding bodies 15 on which the upper horizontal profile 2 is placed. By a corresponding transverse offset of the cylinder body 12 relative to the hook profile 14, the plungers 13 get between the vertical profiles 4 and 5.

In Figure 2, a lifting carriage 16 is indicated, to which a base frame 17 is connected, which also consists of an upper horizontal profile 18 and a lower horizontal profile 19, which are connected to each other by two vertical profiles 20, only one of which is visible. The upper horizontal profile 18 has an upper gripping edge 21 and the lower horizontal profile 19 has a lower gripping edge 22, onto which, in the absence of the side shift frame 1, the fork backs, not shown here, can be placed. In the present case, however, the already described hook profile 14 of the cylinder body 12 is placed or suspended on the upper gripping edge 21, and the sliding bodies 15 according to FIG. 1 are in turn positively placed on the top of the hook profile 14. Thus, first of all - before completion of the assembly - the side shift frame 1 can be pivoted relative to the upper gripping edge 21, and after completion of the assembly, the side shift frame 1 is laterally parallel to the base frame 17, i.e. perpendicular to the plane of the drawing, displaceable by means of the hydraulic drive 11.

As can be seen from FIGS. 2, 5 and 6, the vertical profiles 4 and 5 have a U-shaped cross section with a cavity 23 which is open in the direction of the base frame 17 and at its lower end, ie immediately above the lower horizontal profile 3, two bearing blocks 24 and 25 made of plastic and inserted loosely, which are connected by a vertical axis 26. This axis 26 carries a roller 27 mounted on roller bearings, which in the transverse displacement of the sideshift frame 1 rolls in a horizontal direction on the lower horizontal profile 19 of the base frame 17.

As can be seen from FIGS. 2, 3 and 4, the two horizontal profiles 2 and 3 have an essentially S-shaped cross section and are at least partially mirror-symmetrical to a horizontal center plane E-E of the sideshifter frame 1. This does not change the fact that the lower horizontal profile 3 in FIG. 4 is shown mirror-symmetrical to the upper horizontal profile 2 in FIG. 3, because the cross-sectional view also applies to the viewing direction from the opposite side.

The upper horizontal profile 2 has a first cross-sectional end 28 for enclosing the upper gripping edge 21 including the hook profile 14 and the sliding body 15 and a second cross-sectional end 29 which forms the already described upper gripping edge 6 for the fork tines. The cross section shown in FIG. 3 of the upper horizontal profile 2 is circumscribed by a rectangle R1 which has a height H1 and a width B1, H1 being smaller than B1.

FIG. 3 shows a plane E2 which, in the assembled state, runs at least essentially horizontally and through the upper edge 29a of the upper cross-sectional end 29. The lower edge 28a of the lower cross-sectional end 28 lies by this dimension "t", which is several millimeters, below this plane E2, so that the hook profile 14 and the sliding body 15 are reliably enclosed.

Conversely, the lower horizontal profile 3 according to FIG. 4 has a first upwardly directed cross-sectional end 30 and a second downwardly directed cross-sectional end 31, which forms the lower gripping edge 8 already described. The gripping edges 6 and 8 serve to hold the fork back of the fork tines, which is also not shown here. As can be seen from FIG. 4, the cross section of the lower horizontal profile 3 is circumscribed by a rectangle R2, the height H2 of which is smaller than its width B2.

According to FIG. 4, the upper edge 32 of the upward-facing cross-sectional end 30 of the lower horizontal profile 3 lies by the dimension "s", which is a few millimeters, below a horizontal plane E3 placed through the lower edge 31a of the downward-pointing cross-sectional end 31 of the same horizontal profile 3, which runs parallel to the plane E2 in FIG. 3.

Due to the length of the two vertical profiles 4 and 5, the two horizontal profiles 2 and 3 have a precisely specified distance D, which is important in relation to the explanations below: the upper edge 32 of the cross-sectional end 30 has such a spatial position relative to the lower edge of the lower gripping edge 22 that the cross-sectional end 30 reaches behind this lower gripping edge 22 during the swiveling movement already described above, which is shown in FIG. 2, below. The vertical distance is defined by the dimension "s", which is a few millimeters. To fix the side shift frame 1 relative to the base frame 17, a U-shaped sliding body 33 is inserted between the lower horizontal profile 3 and the lower gripping edge 22 from the ends of the horizontal profile 2 and fixed by one of the screws 10 already described. By screwing the screws 10 in and out, the play between the sliding body 33 and the lower gripping edge 22 can be adjusted, and the sliding body 33 is secured against being pushed out.

The assembled state of the sideshift device according to FIG. 1 is shown in FIG. 5, although the base frame 17 is also omitted here. The hook profile 14 of the cylinder body 12 has in its cavity a downward projection 34 which engages in a complementary recess in the upper gripping edge 21 of the base frame 17, so that the hydraulic drive 11 itself is secured against transverse displacement. Depending on the direction of loading of the two plungers 13, the sideshift frame 1 is consequently shifted to the left or right, starting from a center plane M, in order to compensate for the maneuvering or positioning errors described at the outset. The displacement path is defined by the free length of the plungers 13.

FIGS. 7 and 8 show one of the sliding bodies 9 according to FIG. 1, the two legs of the U-shaped cross section being of different lengths. The longer leg 35, which is located on the pressure side, has a screw-in thread 36 for a grease nipple 37 (FIG. 11) and a lubrication pocket 38. In order to save material, the outer sides of the sliding body 15 can be provided with pocket-shaped recesses between ribs 39. The use of sliding bodies 9 according to FIGS. 1, 7 and 8 is expedient if the rollers 27 according to FIGS. 2 and 5 are dispensed with. Such a variant is explained in more detail with reference to FIGS. 9, 10 and 11. A cylindrical recess 40 in the yoke of the sliding bodies 15 and 33 serves to use a complementary extension of the locking and adjusting screws 10. The sliding bodies 9 have a significantly larger sliding surface than the sliding bodies 33, so that the rollers 27 can be dispensed with for this reason. The final assembly of the exemplary embodiment according to FIGS. 9, 10 and 11 takes place in the manner already described above.

FIGS. 12, 13 and 14 show details of the cylinder body 12 according to FIGS. 1, 2 and 5 as follows: The hook profile 14 has a significantly longer length L1 than the length L2 of the cylinder body 12 itself, and this corresponds approximately to the length L1 the clear distance between the vertical profiles 4 and 5, as can be seen from FIG. 5. As a result, the upper horizontal profile 2 is supported over almost its entire length, in which the structural unit comprising the cylinder body 12 and the hook profile 14 has a large share. The hook profile 14 is provided along its convexly curved upper side 41 with ribs 42, between which the shell-shaped sliding bodies 15 according to FIG. 1 are inserted. The actual cylinder body 12 has two cavities 44 and 45 which are separated from one another by a partition 43 and which, apart from a guide section 46 produced by machining and a sealing seat 47, have been formed by a casting process (FIG. 13). This saves a considerable amount of machining work. Connection pieces 48 and 49 are used for screwing in hydraulic lines, not shown here, with which the movement of the plungers 13 is effected. Figure 14 also shows that the hook profile 14 in the middle of the previously described Has projection 34, is fixed by the cylinder body 12 relative to the base frame 17.

Figures 15, 16 and 17 show a variant of the object according to Figures 12, 13 and 14. In this case, the hook profile 50 is bent from sheet steel and connected by welding to a cylinder body 51 which is made of a steel block. The cavities of the cylinder body 51 which are hydraulically separated by the partition 43 have been produced in this case by drilling. As can be seen from FIG. 16, guide bushings 52 with bores 53 for guiding the plungers 13 are placed on both ends of the cylinder body 51. A lip seal 54 is located at the inner end of the guide bushings 52 and a wiper ring 55 at the outer end. A lubricating nipple 56 is arranged between the lip seal 54 and the wiper ring 55.

The hook profile 50 is provided along its convexly curved upper side 57 with recesses 58, into which extensions 59 of cup-shaped sliding bodies 15 are inserted, on which the upper horizontal profile 2 of the side shift frame 1 can also be displaced in this case.

In the last case described, the structural connection (by a welding process) of the hook profile 50 and the cylinder body 51 resulted in an extraordinarily rigid assembly which has the same aspect ratios as the individual parts of the cast body, so that in this case the upper horizontal profile is extremely is effectively supported over a length that corresponds to the clear distance between the vertical profiles 4 and 5 in the exemplary embodiment.

Claims (11)

Sideshift device for industrial trucks, in particular for forklifts, which have a lifting carriage (16) with a base frame (17), each with an upper and a lower gripping edge (21, 22) for fastening fork tines, with the upper gripping edge (21) against Secured transverse displacement, a first hook profile (14, 50) is attached, on which a hydraulic drive (11) is attached and on which a side shift frame (1) can be pivoted against the direction of travel by means of its upper horizontal profile (2) and by the hydraulic drive (11) is displaceable transversely to the direction of travel, and wherein a lower horizontal profile (3) of the side shift frame (1) is displaceably connectable transversely to the direction of travel with the lower gripping edge (22) of the base frame (17), characterized in that a) that the lower horizontal profile (3) of the sideshift frame (1) has a fixed, upwardly directed cross-sectional end (30) which can be swung in behind the lower gripping edge (22) of the base frame (17), b) and that for the positive connection of the base frame (17) and sideshift frame (1) against a pivoting movement of the sideshift frame (1) around its upper horizontal profile (3) in the direction of travel between the lower gripping edge (22) of the base frame (17) and the lower horizontal profile (2) of the side shift frame (1) U-shaped sliding bodies (9, 33) can be inserted from the lateral ends of the lower horizontal profile (3) and can be fixed relative to the latter. Sideshift device according to claim 1, characterized in that the sideshift frame (1) has two vertical profiles (4, 5) between its horizontal profiles (2, 3), and that the hydraulic drive (11) has two plungers (13) which can be driven in opposite directions, the plungers of which outer ends rest on the inner surfaces of the vertical profiles (4, 5). Sideshift device according to claim 1, characterized in that the horizontal profiles (2, 3) of the sideshift frame (1) have an essentially S-shaped cross section and are at least partially mirror-symmetrical to a horizontal central plane (EE) of the sideshift frame (1) are such that the one cross-sectional ends (28, 30) are directed towards one another and engage around the gripping edges (21, 22) of the base frame (17) in a horizontally displaceable manner and the other cross-sectional ends (29, 31) are directed away from one another and gripping edges ( 6, 8) form for forks. Sideshift device according to claim 1, characterized in that the upper edge (32) of the upward-facing cross-sectional end (30) of the lower horizontal profile (3) below one through the lower edge (31a) of the downward-pointing cross-sectional end (31) of the same horizontal profile (3) horizontal plane (E3) is arranged. Sideshift device according to claim 1, characterized in that the cross sections of the horizontal profiles (2, 3) are circumscribed by a rectangle (R1, R2), the height (H1, H2) of which is less than its width (B1, B2). Sideshift device according to claim 1, characterized in that the hook profile (50) consists of bent sheet steel and that the hydraulic drive (11) has a cylinder body (51) drilled from both ends up to a partition (43) which is connected to the hook profile (50 ) is rigidly connected. Sideshift device according to claim 1, characterized in that the hook profile (14) and the cylinder body (12) of the hydraulic drive (11) are integrally formed as a cast body, the cavities (44, 45) of which extend to the partition (43) except for one each machining section (46) and a sealing seat (47) are formed by a casting process. Sideshift device according to claim 1, characterized in that the vertical profiles (4, 5) of the sideshift frame (1) each have a U-shaped cross section, the cavity (23) of which is facing the base frame (17) of the lifting carriage (16), and that in the lower end of this cavity (23) a pressure roller (27) is arranged, which can be rolled on the lower part of the base frame (17) in the horizontal direction. Sideshift device according to claim 6, characterized in that the hook profile (50) is provided with recesses (58) along its convexly curved upper side (57), into which extensions (59) of cup-shaped sliding bodies (15) are inserted, on which the upper horizontal profile (2) of the side shift frame (1) is displaceable. Sideshift device according to claim 7, characterized in that the hook profile (14) is provided with ribs (42) along its convexly curved upper side (41), between which shell-shaped sliding bodies (15) are inserted, on which the upper horizontal profile (2) of the sideshift -Frame (1) is displaceable. Sideshift device according to claim 1, characterized in that in the lower horizontal profile (3) below the U-shaped sliding bodies (9, 33) adjusting screws (10) for adjusting the play between the sliding bodies (9, 33) and the lower gripping edge (22 ) of the base frame (17) of the lifting carriage (16).

Images