INDUSTRIAL TRUCK COMPRISING A LOAD FRAME

Abstract

An industrial truck includes a drive part with a drive frame and a load part. The load part includes a lift frame having a load frame, which includes a plate, a load-carrying means connected to the plate, and at least one bearing head configured to receive a lift cylinder. The at least one bearing head is connected to the plate.

Claims

1. An industrial truck comprising: a drive part comprising a drive frame; and a load part comprising a lift frame including a load frame, wherein the load frame comprises, a plate, a load-carrying means connected to the plate, and at least one bearing head configured to receive a lift cylinder, wherein the at least one bearing head is connected to the plate.

2. The industrial truck according to claim 1, further comprising a battery positioned in the drive part.

3. The industrial truck according to claim 2, wherein the battery is configured to be permanently installed in the drive part.

4. The industrial truck according to claim 1, wherein the load-carrying means comprises a pair of wheel arms, each including an attached end and an opposing free end, and wherein each of the pair of wheel arms comprise a load roller at the free end that is configured for an initial lift that can be adjusted by a push/pull rod.

5. The industrial truck according to claim 4, further comprising: at least one bearing block is connected to the plate and configured to support the pair of wheel arms; and a deflection lever for the push/pull rod for each of the pair of wheel arms is connected the plate.

6. The industrial truck according to claim 1, further comprising at least one reinforcing plate configured to connect the at least one bearing block and the plate are connected to one another.

7. The industrial truck according to claim 6, further comprising a butt joint positioned between the plate and the at least one reinforcing plate.

8. The industrial truck according to claim 6, wherein the at least one reinforcing plate is connected to each of the pair of wheel arms.

9. The industrial truck according to claim 1, wherein the bearing head comprises a square base plate for the lift cylinder, and wherein the square base plate is connected to the plate of the load frame in a planar manner.

10. The industrial truck according to claim 1, wherein the bearing head comprises a holder for the lift cylinder.

11. The industrial truck according to claim 1, wherein the load frame is configured for a low-lift truck and comprises a plate thickness of 15 to 45 mm.

12. The industrial truck according to claim 1, wherein the load frame is configured for a double stacker truck and comprises a plate thickness of 20 to 70 mm.

13. The industrial truck according to claim 4, where in the plate is an only reinforcing element arranged in a region between the bearing head and the pair of wheel arms.

14. The industrial truck according to claim 1, wherein the at least one bearing head is configured as an abutment for the lift cylinder.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Two preferred embodiments of the invention will be explained in more detail below with reference to the figures, in which:

[0015] FIG. 1 illustrates a perspective view obliquely from below a load frame having two wheel arms attached thereto for a low-lift truck;

[0016] FIG. 2 illustrates a perspective view obliquely from above of the load frame from FIG. 1;

[0017] FIG. 3 illustrates a perspective view obliquely from above of a load frame having wheel arms and additional reinforcing plates; and

[0018] FIG. 4 illustrates a perspective view obliquely from below of the load frame from FIG. 3.

DETAILED DESCRIPTION OF THE INVENTION

[0019] FIG. 1 shows a load frame 10, which has a solid plate 12 made of metal. The metal plate 12 is also referred to as a monoplate. The plate 12 has a substantially rectangular basic shape, wherein cutouts 18, 20 are provided in the region of the wheel arms 14, 16 and can partially receive the wheel arms 14 and 16 due to their shape and position. The plate 12 also comprises cutouts 22, 24 on the side opposite the wheel arms 14, 16, in the region of the corners.

[0020] A bearing head 26 is connected to the plate 12 in the center of the upper region. The bearing head 26 comprises a main body 28 connected to the plate 12 and a bearing holder 30 attached to said main body. The bearing holder 30 is configured to receive a lift cylinder (not shown) that is provided for raising and lowering the load frame, and is thus configured to raise the entire load frame. In a manner known per se, the wheel arms 14, 16 comprise load rollers 32, 34 that can be actuated by means of push/pull rods 36, 38 for an initial lift. The push/pull rods 36, 38 are actuated by respective three-point levers 42, 40. The free lever ends are for example hinged on the vehicle frame, such that, when the load frame is raised, the three-point lever 40, 42 pivots about a fixed pivot point on the load frame and actuates the push/pull rod 36, 38 with its third end.

[0021] FIG. 2 shows a modified perspective view clearly showing the bearing blocks 44, 46 that support the connection of the wheel arms 14, 16 on the plate 12. The bearing blocks 44, 46 have a prism shape with a triangular cross-section. One leg of the bearing blocks 44, 46 rests on the plate 12 in a planar manner and the bearing blocks comprise a recess that leaves free space for the three-point lever 42, 40. On the end pointing away from the plate 12, the bearing blocks comprise the bearing point for the central bearing of the three-point lever 42, 40. One portion 48, 50 of the wheel arms 14, 16 projects beyond the plate 12, such that the bearing block can rest on the projecting portions 48, 50. The joining of the bearing plate and wheel arms and of the bearing block 44, 46 and wheel arms 14, 16 gives the connection sufficient stability.

[0022] In the invention, the plate 12 replaces the otherwise typical box structure in the load frame. Even in the case of very narrow batteries, the use of the plate 12 means a reduction in the length of the vehicle. The bearing blocks 44, 46, together with the plate 12, form a sufficiently long and stable connection for the wheel arms. In addition, the bearing blocks form a triangle on the plate together with the bearing head 26, which triangle ensures that the forces are introduced into the plate without the risk of deforming said plate. It is also clear that, in addition to the reduced vehicle length, the small number of components also reduces manufacturing costs and the amount of handling and joining work associated with a higher quantity of parts. Furthermore, as a solid metal component, the plate has a low vertical range of manufacture, which produces a good cost-to-weight ratio. Another advantage of the design according to the invention is that high load capacities are possible, since there is a direct flow of force without the force having to be deflected and without joint connections having to be subjected to stress. In addition, the load frame presented is easily accessible, which also facilitates maintenance and servicing work.

[0023] FIGS. 3 and 4 show an embodiment of the load frame for raising larger loads of the like provided in a double stacker truck, for example. The plate 12′ can clearly be seen to have a greater thickness than plate 12. Aside from the plate 12′, other components in this exemplary embodiment have been assigned the same reference signs as in the first exemplary embodiment, even if they have different dimensions or if they have a different design, as in the region of the free ends of the wheel arms 14, 16.

[0024] The load frame from the exemplary embodiment in FIGS. 3 and 4 comprises reinforcing plates 52, 54, 56 that adjoin the plate 12′ by a butt joint so as to form a T-shape. As shown by way of example in FIG. 4, the reinforcing plates extend on both sides of the plate 12′ and provide a sufficiently long edge in the direction of the wheel arms 14, 16 for connection to side walls of the wheel arms 14, 16. The connection of the wheel arms takes place on three sides. Each wheel arm has a U-shaped profile, wherein the bearing blocks 44, 46 act on the leg of the U-profile that forms the base. In addition, the plate 12′ may also be connected to this leg of the wheel arm. If a cutout is provided in the plate 12′ for connecting the wheel arms 14, 16, said connection may also extend to the side legs of the wheel arms. The side legs of the wheel arms are also connected via the reinforcing plates 52, 54, 56. The reinforcing plates are also connected to the plate 12′. The additional reinforcing plates allow for the wheel arms to be connected in a sufficiently rigid manner and in a manner stable enough to lift larger loads.

LIST OF REFERENCE SIGNS

[0025] 10 Load frame [0026] 12 Plate [0027] 12′ Plate [0028] 14 Wheel arm [0029] 16 Wheel arm [0030] 18 Cutout [0031] 20 Cutout [0032] 22 Cutout [0033] 24 Cutout [0034] 26 Bearing head [0035] 28 Main body [0036] 30 Bearing holder [0037] 32 Load roller [0038] 34 Load roller [0039] 36 Push/pull rod [0040] 38 Push/pull rod [0041] 40 Three-point lever [0042] 42 Three-point lever [0043] 44 Bearing block [0044] 46 Bearing block [0045] 48 Portion [0046] 50 Portion [0047] 52 Reinforcing plate [0048] 54 Reinforcing plate [0049] 56 Reinforcing plate