DE2017624A1 - Carriages for narrow aisles - Google Patents

Description

"Truck for narrow aisles"

In department stores, the potential profit is directly related to the versatility and capacity of the existing storage room. In other words, the more profitable a department store becomes it can hold more goods or material. From it is It can be seen that the aisles in department stores must be viewed as unproductive because in these aisles nothing can be stored »For this grande are in many attempts have been made in recent years Manufacture pallet trucks that work on the narrowest possible seams to the floor space required for intermediate corridors to keep as low as possible

Other types of pre-existing trucks for narrow aisles are transport devices that carry the load between the wheels and below the chassis

Patent attorneys Dipl.-Ing. Martin Licht, Dipl. * WmJChylrfg. wxel namnlann, Dipl.-Phys. Sebastian Herrmann

have front boom parts that are dimensioned in such a way that that the dolly astride the to be picked up Load is moved, as well as vagaries that have a cranesbill device have, which serves to reach in front of the front cantilever wheels to grab the load. If the width of the intermediate aisle is not critical, a counterbalanced one is usually used Vagen used where the front end of the hurry is always in front of the front wheels and behind the Front wheels are provided with a counterweight for reasons of stability is.

The present invention fulfills the need to operate in the narrowest possible inter aisle space, wherein the trolley according to the invention has the stability of a trolley provided with counterweights and not the disadvantages the well-known vagina for narrow aisles. For example, the telescopic mast devices are limitations subject to visibility and high maintenance costs. Both push mast forks and. Transport devices that carry the load between the wheels have off-lying driver's cabs, which pose a safety risk for the driver, and furthermore, the electrical one The battery is difficult to access in such vehicles.

According to the present invention, the above becomes Requirement met by a variable bath stand that changes with a certain size for each load can be. The bath stand is changed by moving two of the vehicle wheels along the longitudinal ·· de · vehicle be hydraulically extended or drawn in · Furthermore, a longer bath stand provides improved stability when transporting loads.

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Thus, there is the one on which the present invention is based Task in creating a pallet truck or stacker that has the versatility, safety and capacity τοη department stores met · It should according to the invention a lift truck is created that is able to operate in a narrower aisle, than was previously possible, and at the same time the Has advantages of a bit counterbalanced stacker. Furthermore, according to the invention, such a lift truck or forklifts are created, the one changeable Wheelbase, which creates a stability and versatility equal to that of stability and versatility τοη is machines that have longer wheelbases, but which are much wider gears for their Need operation.

Furthermore, according to the invention, a lift truck is to be created with a variable wheelbase that has an optimal Allows side angle stacking in narrower aisles than it does ■ it was possible with the previously existing and known forklifts. Furthermore, according to the invention, a lift truck should be variable Wheelbase are created, which allows a long wheelbase during normal operation, whereby the appropriate attachment and protection of the Driver and the battery chamber is guaranteed. Furthermore, according to the invention, a lift truck is to be created, in which the well-known sliding mast device with many moving parts is omitted, which reduces the cost of maintenance be reduced. Finally, according to the invention, a Pallet trucks are created that has a turning circle that is much smaller than the turning circle of previously known Pallet trucks that are stabilized by counterweight.

Other advantages and objects of the present invention are based on the following description and claims

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with reference to the accompanying drawing, in which illustrates a preferred embodiment of the present invention

In the drawing are:

Fig. 1 is a plan view of a lift truck employing the present invention;

FIG. 2 is a side elevation view of that shown in FIG Pallet truck;

Fig. 3 is a front view shown partially in section

the lift truck shown in Figures 1 and 2; and

Fig. K to 7 are plan views of the lift truck geaäss of the present invention in which the manner shown, in which the carriage is used to bring ine to "load to the desired location.

Reference is first made to FIGS. 1 and 3. In these figures, a pallet truck IO is shown, the one Has driver's cab 12, on the back of which a large cheek 14 is arranged, which the batteries of the vehicle and contains the electrometer or other motor.

Two steerable drive wheels 18 are attached to the vehicle under the crook Ik . The baths 18 are steerable by any known means (not shown).

At the front part of the vehicle, a mast pivot bracket 20 carries a mast 22 which can be pivoted about bearings 2k. Also on the front part of the vehicle, a side shift carriage 28 carries two load forks

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Two non-steerable load wheels 32 are on movable arsenic 34 attached, which have a U-shaped cross-section. As clearly shown in Figures 1 and 2, there are non-steerable load wheels in the extended position · When retracted, the axles of the wheels are retracted to the left so far that they are almost on a vertical line running through the axes of the bearings 24.

Two guide rollers 36 are stationary on the lift truck 10 attached, and two movable guide rollers 38 are on the rear end of the movable arm assembly 34 supported.

One hydraulic cylinder 40 on both sides of the Cart is used to extend arm assembly 34 and move in. When the arm assembly is retracted, the guide rollers 38 are directed towards the wheels moved until the wheels 32 reach the position described above. Of course, the cylinders 40 can be actuated any desired amount so that the wheels 32 can be set as the driver wishes.

Two immovable U-profile parts 42 are on the main frame of the lift truck 10 welded, and the guide rollers run along in the channels formed by the profile parts.

The wheels 32 and the wheels 18 are provided with selectively actuatable brakes at 33 and 19, respectively, so that the actuation the cylinder 40 can either be used to pull the load back towards the vehicle, or the entire vehicle body in sight of the load pull forward xu ·.

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Reference is now made to FIGS. 4 to 7. The operation of the vehicle can best be described as follows will:

The lift truck 10 old a load 55 'on its forks and bit extended to the optimal wheelbase Load wheels 32, is stopped at a certain point, with the load wheels 32 driven slightly beyond the opening in which the load is to be placed · In this position the load is on the forks 30 centered on the pallet truck. '

As shown in Fig. 5, the driver then turns the pallet truck and the load se that the outer corner of the load just reached the far side of the opening. ”Then he turns the vehicle around until the vehicle is in. in a line with the tree in which the load is to be deposited. The vehicle now has the functions shown in FIG. 6 position shown reached.

The driver then adjusts the steering for straight-ahead travel and applies the brakes 33 on the non-steerable baths 32. When these brakes are applied, the hydraulic cylinders that control the load arms are actuated, thereby moving the entire vehicle body, mast, sled and load forward into the load storage space. The side-shift sled 28 can then be operated by the driver be to di · load to bring the exact center of the bearing surface, "o that the vehicle and load the shown in figures 7 · achieve" positions. . -?. \ '■' ■ __. '-i ^: % ^.

Around the load on the storage area abxa «etx« a, w «rd« a dl The forks are lowered and the hydraulic cylinders on the turrets are extended, causing the vehicle body,

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the mast, sled and forks are moved backwards. Then hardly the driver turn the steerable wheels Release the brakes on the wheels 32, put the pallet truck back in • Bring a starting position and drive to another place · The driver also knew the car in one form Drive out of the room in a wise manner, as is the case with well-known Gab'lstaplem without extendable arms is common.

Requires removal of a load from the storage room the reverse of the order described above.

According to the invention, there is also a pallet truck for narrow aisles created that can be used in rooms which are much narrower than the spaces that were required by the previously known pallet trucks. Although the the above description and the drawings refer to only one Embodiment of the present invention directed It will be apparent to those skilled in the art that many modifications are possible without falling outside the scope of the following Leave claims.

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Claims (1)

PATENT CLAIMS: 1. Load carrier, characterized by an ait own Drive provided chassis, which has a steerable pair of baths (18) and a non-steerable pair of wheels (32), and a device associated with the one pair of wheels (32) to change the wheelbase on the Vagen. 2. Vagen according to claim i, characterized in that the device for changing the wheelbase comprises two retractable arms on which the one pair of wheels can be rotated is stored, and that a device is attached to the chassis, by means of which the ane is extended and retracted will. 3 · Vagen according to claim 2, characterized in that two lifting forks are articulated to the »Vagen and are arranged to be movable in a vertical direction ± m in relation to the» Vagen. 4. Vagen according to claim 3t, characterized in that a side shift slide is provided on which « the forks are attached so that they can be moved perpendicular to the longitudinal axis of the trolley. 5. Trolley according to claim 2, characterized in that each pair of baths are assigned to Bressen, so if the bresaen of one pair of wheels are laid out, the other pair of wheels is moved away from or towards the braked pair of wheels when the device is extended and pulling in the Ame is operated. 009842/1381 6. Load carriers, characterized by a chassis Hit your own drive that has at least one steering bath and has at least one non-steerable wheel, and a device assigned to a * wheel for changing the wheelbase of the carriage. 7. Method of placing a load in a specific space using a forklift truck that is not a has a steerable pair of wheels, a steerable pair of wheels and a variable wheelbase, characterized in that that the Vagen is first brought with an extended wheelbase into a position in which the load on the lifting forks is in the immediate vicinity of the outer edge of the certain space, with the front wheels slightly have run out of a margin, but are between the margins of the room that then the rear part of the vag is pivoted until the vag is aligned with the particular space, and that the front wheels are held in place and the wheelbase is shortened. 9. The method according to claim 7, characterized in that that the load is lowered into the designated space, the wheelbase is extended and the rear part of the trolley is pivoted until the Vagen returns to the starting position achieved. 9. The method according to claim 7, characterized in that the load is lowered into the certain space, the vagina is driven out of the space and the rear part of the vagina is turned until the longitudinal axis of the vagina is parallel to the aisle. 009842/1381