DE1992468U - Loading platform that can be extended from both sides - Google Patents

Description

The subject of the present invention is a bilateral extendable Loading platform, which consists of two loading forks arranged one above the other, the upper loading fork being replaced by a Chain drive and the lower loading fork through a combined Rack and pinion chain drive is extended in such a way that the The absolute extension distance of the upper loading fork is about twice as large as that of the lower loading fork and the dimensioning the extension routes are carried out through the provision of a transmission gear,

The field of application of the loading platform according to the invention lies primarily in elevators and stacking cranes.

With such devices, it is necessary to carry piece goods Preferably 'to move pallets in a vertical and horizontal direction, for example a loading platform for stacking cranes, it can be moved vertically and horizontally between two ragal rows, whereby in front of the desired racking

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fold by means of the loading platform according to the invention General cargo, preferably a pallet, is to be moved into or removed from the shelf compartment.

The state of the art includes telescopically extending and retracting loading platforms that move in and out in one direction by chains be extended. If it is to be extended in the other direction, the loading platform is rotated a total of 180 °; Another possibility is to use the furthest extending outer telescope part at its connection point to couple with the inner telescopic part according to its direction of travel.

The prior art also includes one-piece telescopic Platforms that can be extended to both sides, with the goods standing on an extendable carrier that is longer than this must be, since the tilting moment that arises in the extended state is safely absorbed in the displacement in the stationary part must become. This has the further disadvantage that this inevitably large carrier length results in dead aisle space is needed. When the goods are picked up in the middle of the platform, they can be placed on shelves either to the left or to the right to drive in and set down, the platform is in front of the goods in the direction of travel and requires dead shelf space. But it will be the good removed from the telescope on one side of the shelf, in this embodiment of the prior art it cannot be on a Shelf on the opposite side of the space between the shelves can be delivered without further ado.

These disadvantages of the prior art are addressed by the charging. platforms of the present invention overcome while achieving advantages.

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The two-part telescopic fork of the invention Platform whose upper fork is equal to the length of the load can be shifted in the middle to both sides or optionally moved.

The subject matter of the present invention will now be described in detail with reference to the accompanying figures.

Figure 1 shows an elevation of a two-row shelf arrangement with a loading crane which can be moved vertically and horizontally in the space and has the loading platform according to the invention.

FIG. 2 is a plan view of the arrangement according to FIG. 1.

Figure 3 shows part of the two rows of shelves with in between arranged loading platform according to the invention.

FIG. 4 is a plan view of the loading platform according to FIG. 3.

FIG. 5 shows a side view of the platform according to the invention.

Figure 6 is a cross-section of the platform in the direction of travel seen the platform.

In all figures, the same elements are provided with the same reference symbols.

The so-called upper fork 1 preferably has one approximately U-shaped cross-section and has a chain connection point 2 in the middle, to which the chain 3 is connected. The upper fork 1 runs with the legs of the U-shaped

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Lower part 4 on rollers 5 of lower fork 6, which in turn is shifted between rollers 7. The rollers 7 are shifted on fixed supports 8. The two ends of the lower fork 6 carry the two deflecting wheels 9 in the middle, around which the drive chain 3 is guided. On the underside of the lower fork 6 there is a toothing that extends over the entire length of the fork 6, preferably a toothed rack 10 in which one side of an endless double chain 11 engages. This double chain 11 is kept in constant engagement with the toothing 10 by two pairs of sprockets 12, which are displaced parallel to the toothing 10 in the fixed carrier 8. Both sprocket pairs 12 are designed in such a way that only one sprocket 13 engages with one side of the double chain 11, while the other side of the double chain 11, which meshes with the teeth of the lower fork 6, only engages with one disk 14 is supported with a smooth surface. As a result, the toothing 10 of the lower fork 6 can run freely over the pair of sprockets. A chain drive 15 is the. Chain 3 of the lower fork 6 with the Doppelkettenradpaar! 12 through d as Ke tt enrad engaged. The drive 17 initiates the movements of the upper fork 1 and the lower fork 6 through the chain drive 18 via the double chain wheel pairs 12 either to the left or to the right. ·

When the lower fork 6, which has a toothing, is pushed out, the upper fork 1 is at the same time in front of the Rush tip of the lower fork 6. Since the end position of the upper Fork 1 is given in the shelf and at the same time the front one End of the lower fork 6 under the middle of the upper fork 1 is required, the ratio of the drive is 15 »6 compared to the drive train 18V 12 in this desired way

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Voted. Since the lower fork 6 is slightly above the middle of the System drives out * the two drive sets 15, 16 something, seen to the left or to the right of the center of the system, arranged.

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Claims (7)

fe-aHre- * 4 a ti s ρ odor 1 ») Loading platform that can be extended on both sides, in particular for elevators and stacking cranes, characterized that it consists of an upper fork (1) and a lower fork (6) receiving them, a chain-shaped drive means (3) for the top fork, one of a double chain (11) and a toothing (10) combined combined drive for the lower fork, the drive being the endless chain (3) chain wheels (16) and for driving the double chain (11) chain wheel pairs (12) are provided, wherein the diameter of the sprocket driving the endless chain to the diameter of the sprocket driving the double chain Sprocket are in the ratio that the desired Ratio of the exit path of the upper fork to the exit path determined by the lower fork. 2.) loading platform according to claim 1, characterized in that the length of the upper fork (l) is equal to the maximum Length of load is. 3.) Loading platform according to claim 1 and 2, characterized in that that the length of the lower fork (6) is equal to a length that is not greater than the length of the fork (1) plus the diameter of the two deflection wheels (9) plus the Length of the chain connector (2). 4.) Loading platform according to claim 1 to 3 »characterized in that that a sprocket pair (12) from a gear and a consists of this centrally arranged wheel with a smooth surface, the gear in one side of the ; _: R ^ .37S Expectations - Double chain and the smooth surface the other side the duplex chain is supported and the wheel with a smooth surface (14) is arranged below the side of the double chain which is in engagement with the toothing (10). 5 ») loading platform according to claim 1 to 4, characterized in that that the "guidance of the upper fork (l) consists of rollers (5) that are inside the upper fork and on the lower Fork are arranged. 6 ») Loading platform according to claim 1 to 5, characterized in that that the guide of the lower fork (6) from both sides arranged Pairs of rollers (7), which are shifted on a fixed support (8). 7.) Loading platform according to claim 1 to 6, characterized in that that the length of the solid support (8) is equal to the length the lower fork (6).