DE3407165A1 - Loading bridge for ramps - Google Patents

Abstract

The invention is based on bridges of this type in which a folding extension for placing on the vehicle or the like is provided at the front of the bridge superstructure, the said extension having narrow sections on both sides for adaptation to platforms of different widths. In order to prevent these lateral sections from catching in the ramp recess when the bridge superstructure has to be inserted into the ramp recess, stops are allocated to the sections, the former intercepting the latter in the case of a downward folding movement, before a supporting position has been reached. Accordingly, only the other sections of the extension (central section) can adopt a supporting position to support the bridge superstructure in the rest position, when the bridge is not in operation.

Description

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Kurt Alten in 3o15 Wennigsen

Drive-over bridge for ramps

The invention relates to a drive-over bridge for ramps with an extension that can be folded in and out for placing on the platform to be loaded or unloaded, whereby the extension is in the vertical rest position supported on an abutment and one or both sides with one or more hinged sections to change the effective width of the extension is provided, which can optionally be folded in and out and are connected to the middle part of the extension by a detachable driver.

These sections located in the edge area of the bridge plate allow the bridge to be adapted to the width of the platform; they are optionally folded back after unfolding the extension, e.g. to bring only the middle part to rest. In the case of the known bridges of this type, this can be achieved Sections in a vertical rest position, which creates the risk that the tips of the sections on reach the abutments mentioned. The sections thus act as supports and prevent immersion • ία r bridge plate in the bridge recess, ie one • back position, which also allows loading or unloading of - ία ·; forms that are located below the ramps

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3A07165

surface.

The invention is based on the object of proposing a bridge of the type mentioned at the beginning, their bridge plate or extension to different Widths are adjustable, but also an immersion of the bridge plate in the bridge recess allows.

To solve this problem, according to the invention Sections are assigned a stop which the sections in a folding movement from top to bottom before reaching intercepts a support position.

So that the sections do not assume a practically vertical rest position - like the middle part of the extension -, but an inclination in such a way that the tip of the sections does not touch the abutment in the Ramp can hit, the bridge plate should with the middle part of the extension must be pivoted under the ramp surface. Still can at the end of the bridge operation, the middle part move into the vertical support position because the drivers driving over the sections - if they are "locked" at the stop - enable, entrainment in the rest but allow it again when the middle part has to be pivoted up into the operating position.

Further details of the invention are explained with reference to the drawing, in which an exemplary embodiment of the invention is shown.

Show it :

Fig. 1 is a bridge in a vertical partial longitudinal section, in the operating position, however with folded side section,

. 2 a partial plan view of the bridge according to Pig. 1 and

Fig. 3 is a view of the extension when this is located together with the section in the driving position, in the direction of the Arrow a according to FIG. 1 seen.

The bridge plate 1 is mounted at its rear end about a horizontal axis 2 on the ramp 3, the surface of which is denoted by 4-. The bridge plate 1 is located in a recess 5 of a ramp 3, the plan of which practically corresponds to the top view of the bridge plate 1.

At the free end of the bridge plate 1 there is a foldable extension 6 for resting on the platform 7 of a vehicle to be loaded or unloaded. Accordingly, the clear width of the platform 7 is smaller than the width of the bridge plate 1. Therefore, the drive-over bridge can be used on platforms that are in the surface 4, above or below, but for which the bridge plate Λ must be immersed in the recess 5.

The extension 6 is also articulated in a known manner so that the bridge plate 1 extends over the

There is socket part 13 in which the bolt 12 engages can and which is attached to the sections 11.

Section 11 or both sections 11 are now folded down by hand while overcoming the driver, In any case, the sections 11 have a stop 14 on their underside, which prevents them from moving against the Bridge plate 1 to cover a pivoting path of practically 9o °. The bridge plate 1 is now lowered, where the middle part 1o on del? Platform 7 to the plant comes. As shown in FIG. 1, the section 11 assumes an inclined position. Should now If the platform 7 descends, the bridge plate 1 can follow, since the section 11 does not have the abutment 9 can come into contact. The support position .wird is prevented by the stop 14-, which is on the front side the bridge plate 1 applies.

Such a stop is missing on the middle part 1o; it can therefore swivel back by about 90 ° and then arrives at c support position, which is shown in FIG. 1 at b.

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Claims (7)

Expectations 1. Drive-over bridge for ramps with one at the front Extension that is located on the bridge plate and can be folded in and out to place on the one to be loaded or unloaded Platform, whereby: the extension is in the approximately vertical rest position in the not in Operation bridge is supported on an abutment and one or both sides with an or several foldable sections for changing the effective width of the extension is provided, which is optional can be folded in and out and connected to the middle part of the extension via a detachable driver are, characterized in that the sections (11) is assigned a stop (14) to which the sections intercepts with a folding movement from top to bottom before reaching a support position. 2. Bridge according to claim 1, characterized in that the driver against the action of a restoring force (Spring) is releasable and a removable lOrmschluss (Tip, pan) has. 3. Bridge according to claim 1, characterized in that the sections (11) come to a stop on the face of the extension (1). - 4. Bridge according to claim 1, characterized in that in the rest position of the bridge the central part (1o) of the Extension (6) assumes an approximately vertical position, while the sections (11) have a steep oblique position take with the tip of the sections in front of the abutment (9) on the side facing away from the ramp. .5- 5. Bridge according to JLnspruch 2, characterized in that the driver on the facing edges of the middle part (1ο) on the one hand and the sections (11) on the other hand is located. - 6. Bridge according to claim 5 »characterized in that the entrainment causing parts (surfaces) of the driver practically in the parting line between the Middle part (1o) and the sections (11) are located in such a way that any relative pivoting the middle part (1o) and the sections (11) can be carried out. 7. Bridge according to claim 1, characterized in that the stop (14) on the inside of the Sections (11) is located (Fig. 1).