CS276915B6 - Suspension - Google Patents

Abstract

The hinge consists of a plate /1/ with several holes /10/, several hook bolts /2/ with nuts /3/ and a chain /4/. The central part of its plate /1/ is provided with a recess /11/ with a cutout /12/ for the chain /4/, provided in the direction of the longitudinal axis /120/ with at least one groove /121/. The width of the groove /121/ is greater than the thickness of the chain link /4/ by the necessary clearance. The curved part /20/ of the hook bolts /2/ is flattened to a plane parallel to the longitudinal axis /120/.

Description

Hinge

Field of technology

The invention relates to a suspension, in particular for a mining device, for example for suspending a mine suspension track line on the profiles of the arch reinforcement of a mine corridor.

Prior art

To date, the most commonly used suspension for suspension of a track is a two L-shaped curved plates, the webs of which are connected by two welded attachments and provided with holes for screws passing through the chain eyes. The flanges of the plates are provided with holes for hook-shaped screws of circular cross-section, through which the hinge is connected to the arch of the mine reinforcement. A reinforcement is welded between the flange and the web. A certain disadvantage of this hinge is the large height, relatively large weight and laboriousness of production. A holder has also been proposed, consisting of suspension plates, removably connected and suspended on brackets on a mine arch reinforcement, between which a rectifying member provided with a supporting element of the suspension track is connected by at least one of its openings. Even this handle is relatively complex and laborious to manufacture.

The essence of the invention

The disadvantages of the above-mentioned hinges are eliminated by hinges comprising a rectangular plate provided with holes in which hook-shaped screws are housed, of which the chain is also a part. The essence of the invention lies in the fact that the plate is provided in its central part with a transverse recess and a longitudinal cut-out, in the direction of the longitudinal axis of which at least one groove is provided. The chain link is loosely accommodated in this groove. The cross section of the curved part of the hook screws is flattened on both sides.

The hinge according to the invention is simpler to manufacture, it has higher strength with lower material consumption. Another advantage is the minimum hinge height and easy change of chain length.

Overview of figures in the drawings

The hinge according to the invention is shown in a simplified manner in the accompanying drawings, in which Fig. 1 is a front view of the hinge, Fig. 2 is a plan view of the plate in an unfolded shape and Fig. 3 is a side view of a hook screw.

Example of an embodiment of the invention

The rectangular plate 1 has holes 10 in the corners for hook screws 2 and in the middle part it is provided with a recess 11 and a cut-out 12. The cut-out 12 is provided with at least one groove 21 in the direction of its longitudinal axis 120, the width of which is 2 to 3 mm larger than the thickness of the chain link 4. The cross-section 11 with its shape approaches the shape of the outer surface of the profile of the arch 5 of the reinforcement. The hook screws 2 have a cross-section of their curved part 20 flattened on both sides. The hinge according to the invention is first mounted on the arch 5 of the mine tunnel reinforcement or a similar profile with the hook screws 2 loose. In this position

CS 276975 B6 it is possible to freely extend the chain 4 through the cut-out 12 to set it in the desired position, in which the respective chain link 4 is inserted into the groove 21. Subsequently the hook bolts 2 are tightened with nuts 2 and the chain 4 is firmly clamped between the plate 1 and corridors. If required, the cut-out 12 can be provided with two coaxial grooves 21. The hinge according to the invention can be used in addition to deep mines in other fields, for example in construction.

Claims (1)

PATENT CLAIMS Hinge comprising a rectangular plate provided with holes in which hook-shaped screws are accommodated, which also includes a chain, characterized in that the plate / 1 / is provided in its central part with a transverse recess / 11 / and a longitudinal cut-out / 12 /, in the direction whose longitudinal axis (120) is provided with at least one groove (21) in which the chain link (4) is loosely accommodated and the cross section of the curved portion (20) of the hook bolts (2) is flattened on both sides.