DE1084887B - Crane bridge in shell construction - Google Patents

Description

GERMAN

The invention relates to a crane bridge in shell construction in the form of a downwardly open one Box containing the necessary mechanical and electrical equipment for the bridge and for the contains hanging trolley, especially for overhead traveling cranes and loading bridges as well as similar lifting and Loading equipment.

Overhead traveling cranes and loading bridges as well as similar lifting and loading devices of all kinds that are used for picking up used by trolleys are built according to different construction principles. The closed one is known Box-shaped construction with a trolley frame running on top or inside also the use of a swinging trolley.

The designs known from the prior art have the disadvantage that, for example a trolley traveling on the top chord is unprotected against dust and weather influences, or a shelter must be provided, but this severely hinders accessibility. In the case of cats running inside, it also proves to be disadvantageous that they are used for maintenance and repairs are difficult to access.

From these disadvantages and shortcomings, the task arose of creating a self-contained crane bridge for To design overhead traveling cranes, loading bridges or similar lifting and loading devices with hanging trolleys in such a way, that with maximum utilization of the load-bearing parts with simultaneous structural improvement Perfect access to the machine and electrical parts of the trolley is achieved.

According to the invention, the object is achieved by one of preferably with longitudinal and transverse stiffeners top chord provided with sheet metal, which absorbs the horizontal load on the bridge, by two side walls made of stiffened sheet metal in a known manner and by one preferably made of stiffened sheet metal, two catwalks forming lower chord, which is passed through an opening is interrupted for the hoist ropes.

A crane bridge in an embodiment according to the invention is described below with reference to the drawing; after that shows

1 shows a crane bridge in a longitudinal view,

FIG. 2 shows a section along a plane AB in FIG. 1,

Fig. 3 is a section along a plane CD in Fig.l.

The crane bridge, a fully load-bearing shell construction, consists of two thin side walls 1, which for absorbing the wheel pressures through optionally dimensioned sheets 2

Crane bridge in shell construction

Applicant:

Institute for Conveyor Technology,
Leipzig W 34, Anton-Zickmantel-Str. 50

Gerhard Lang and Rudolf Necke, Leipzig,
have been named as inventors

can be reinforced. Thanks to the vertical, rigid lightweight profiles arranged perpendicular to the longitudinal axis 3 the buckling security is guaranteed, furthermore, the moments from the vertical loads are reduced by it transferred from catwalks 4. The trolley tracks 5 are arranged above the side walls 1. Outside of the plane of the side walls 1 orthotropic pressure plates 6 acting as an upper belt are connected to which are drawn into the side walls 1 on both sides of intermediate walls 7 for better transfer of forces are. Cross stiffeners 8 together with the lightweight profiles 3 form a frame that is only on the The underside has an opening 9 between the catwalks 4 for the lifting ropes 10 to pass through. To prevent a lateral evasion of the hoist 11, which with the trolley 12 through Bolt 13 is articulated, are on the lower part of the lifting mechanism 11 at the level of the catwalk 4 lateral Guide rollers 14 attached, which lean against baseboards 15 of the catwalks. On the side walls 1 outside reinforcements 16 are arranged, which also the bulging by occurring Prevent ou forces. The upper chord is covered with a thin sheet 17 with longitudinal stiffeners 18 is connected. At both ends of the bridge welded head girders 19 are arranged in which Rollers 20 and perpendicular thereto guide rollers 21 are mounted. Below the orthotropic pressure plates 6 conductor lines 22 are arranged.

The suspension of the trolley and the omission of a shelter ensure good accessibility guaranteed for all mechanical and electrical parts of the cat. Likewise, the heavily used bending beams of the trolley frame are replaced by simple tension rods, which results result in considerable weight reductions.

Claims (3)

Patent claims: 1. Crane bridge in shell construction in the form of a box open at the bottom, which has the required 009 549/107 contains mechanical and electrical equipment for the bridge and for the suspended trolley, in particular for overhead traveling cranes and loading bridges as well as similar lifting and loading devices, characterized by an upper flange (17) preferably provided with longitudinal and transverse stiffeners (8, 18). Pressure plates 6), which absorbs the upper horizontal load on the bridge, by two side walls (1) consisting in a known manner of stiffened sheet metal and by a lower chord consisting of preferably stiffened sheet metal, forming two catwalks (4), which is passed through an opening (9) for the hoist ropes (10) is interrupted. 2. Crane bridge according to claim 1, characterized by guide rollers (14) which are located on baseboards (15) lean against the walkways (4) and thereby the lateral pivoting of the lifting mechanism (11) limit the trolley, which pendulums in a known manner by bolts (13) in the trolley (12) is hung. 3. Crane bridge according to claim 1, characterized in that the lifting mechanism (11) is optional swinging or rigid by any bracing elements in the frame of the trolley (12) can be hung. Considered publications:
German patent specifications No. 609 041, 672 168,
750; Swiss Patent No. 301 111;
Demag-Nachrichten, 1955, issue 141. 1 sheet of drawings