DE7727309U1 - SPRING DEVICE FOR NOISE REDUCTION IN FORKLIFTS - Google Patents

Description

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GmbH Darmitadt

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Spring device to reduce noise in forklifts

The forklifts used on a large scale to transport goods occur when driving on uneven ground and noises can be heard when unloaded.

The causes of these beating noises, which are perceived as very annoying, lie in the otherwise appropriate and proven designs of transport fork and transport plate in commercially available forklifts. The part of the forklift truck used to pick up the goods to be transported consists essentially of a transport plate (1), pick-up shoes in the form of a U-rail (2) and the transport fork (3). The space between the U-rail, the transport plate and the transport fork is dimensioned in such a way that a space of 1 - 2 cm is maintained, on the one hand to have a tolerance for different forks, on the other hand to prevent the conically tapering transport task in { '}) can wedge tight. Because of the play, the mentioned shear noises occur when driving on an uneven surface.

It has been found that forklifts equipped with a for Receiving the carrier part serving to be transported and essentially consisting of a transport plate (1), receiving shoes in the form of a U-rail (2) and a transport fork (3), the space between the U-rail elements, The transport plate and the transport fork are dimensioned in such a way that a certain amount of leeway remains, even in an unloaded state Who; n between the transport plate can be driven with low noise (1) and U-rail (2) resting on the U-rail (2) a suspension is inserted.

GmbH Darmstadt

The numbers in brackets refer to Ji-; depiction the relevant elements in the drawing.

The retracted transport fork is under the action of the spring pressure (j5) held in contact with the transport plate (1). Since the have so far been moving within the given scope No more moving parts against each other and hitting each other Can, the cause of the impact noises is eliminated. The forklift can also be used on uneven surfaces when it is unloaded Underground without the disturbing noise effect described move. FIG. 2 shows the operating state with the transport fork fully retracted.

The suspension to be used according to the invention. 3 preferably consists of one or more leaf springs per fork. Purpose: na.3i; _ / ~ i'-wise The leaf spring (5) can rest loosely on the U-rail, whereby it falls out by means of locking elements (4) which are attached to the U-rail 1: edge height is prevented. The leaf spring is dimensioned in such a way that when it is through the Transpjr *. forked and thus stretched, in its longitudinal dimension the distance between the locking elements (4) attached to the front of the U-rail (2), narrowly, ie without hitting the sides. The leaf spring can also be fixed, for example on one side in the end area of the sinusoidal bend. The material and spring properties of the suspension are determined by the intended use.

The ar. The front sides of the U-rail fastened locking ·. · ;; Elernont ·: (V soiiai, have dimensions of the kind Λ & 2 they effectively prevent the suspension (5) from falling out. Si3 K'Jn.vi-n, for example, order flat irons ;;.

The suspension to be used in accordance with the invention can also without further ado can be retrofitted in a Tranaport sheet.

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7727309 12/22/77

Claims (2)

Protection claims 1. Spring device to reduce noise in forklifts with a support part used to hold the objects to be moved, consisting of a transport plate (1), Pick-up shoes in the form of a U-sole (2) and one Transport fork (3), the space between the two U-rails (2), transport plate (1) and transport fork (j5) are dimensioned so that a certain amount of leeway remains, are equipped, characterized, that a suspension is inserted between the transport plate (1) and the U-rail (2). 2. Spring device for reducing noise in forklifts according to claim 1, characterized in that between Transport plate (1) and U-rail (2) resting on the U-rail (2) a leaf spring (5) is inserted. J), spring device for reducing noise in forklifts according to claim 2, characterized in that the leaf spring (5) rests loosely on the U-rail (2), being supported by blocking elements (4) on the U-rail (2) are attached near the edge, is held in position. 7727309 12/22/77