RU2235677C2 - Rail unit - Google Patents

Abstract

FIELD: heavy-duty rail structures.

SUBSTANCE: proposed rail unit contains rails, rail baseplate and clamps, and it is installed on crane beam. Rail baseplate is made of rolled T-section with wall orientated upwards. Holder is tightly fitted on wall of T-section and is connected with wall by press-fitted pins. Flanges with horizontal sections are installed symmetrically relative to vertical axis, thus forming two channels relative to T-section wall. Rail is placed in each channel. One foot of each rail is cut off. Rails are arranged with side surfaces of neck adjoining side surfaces of holder to form symmetrical pair. Cutoff feet f rails are located under holder. Holder is in contact from top with rail heads from their lower sides. Clamps with free ends are tightly fitted in clearance between outer surfaces of necks of pair of rails and flanges. Free end of each clamp is jacked up by bolt whose lower end thrusts against horizontal section of corresponding flange. Rail baseplate is connected with horizontal sections of flanges by bolts or studs.

EFFECT: increased service life.

1 dwg

Description

The present invention relates to transport structures with an intensive heavy 8K, 7K operating mode, in particular to reliable fastening of rails on crane beams and on the main beams of railway bridges.

As an analogue, we take the known fastening of rails to crane beams [1, p.203, Fig. 10.37].

The disadvantage of the analogue is the inability to fix the rail on the crane beam without slipping. This leads to excessive material consumption, since the rail material cannot be taken into account in the cross-section of the crane beam.

The durability of the fasteners is low, since the welds and bolts are destroyed by metal fatigue in this stressed unit.

The technical result of the invention is to increase the durability of both the node itself and the crane beam in the area under the rail, and reducing the complexity of mounting and dismounting the rails.

The technical result is realized in that the rail block mounted on the crane beam contains rails, under-rail lining and terminals.

The difference is that the under-rail lining is made of a rolling brand oriented with the wall up. Moreover, the holder is tightly mounted on the wall of the brand, connected with pressed fingers, having horizontal sections of ridges symmetrically relative to the vertical axis, forming two channels relative to the wall of the brand, a rail is inserted into each channel, one of the soles of which is cut off.

The rails are located with the side surfaces of the neck adjacent to the side surfaces of the cage and form a symmetrical pair, the cut out soles of the rails are located under the cage, and on top of the cage is in contact with the heads of the rails from their lower sides.

In the gap between the outer surfaces of the necks of the pair of rails and the ridges, the terminals having free ends are tightly embedded, while the free end of each of the terminals is jacked by a bolt rested by the lower end to the horizontal section of the corresponding ridge.

The under-rail lining is connected to the horizontal sections of the ridges by means of bolts and studs.

Comparison with the analogue shows the following significant differences:

- reliable fastening of a pair of rails without slippage is performed by means of a rail support;

- shear forces in the connection are transferred from the pair of rails to the under-rail lining by means of friction forces;

- guaranteed tightness of the connection is carried out by means of terminals having free ends with an advantageous ratio of shoulders and bolts jacking said ends of the terminals;

- quick disconnect connection, which provides quick successive replacement of each of the rails without stopping the operation of bridge cranes;

- replacement of rails is performed by longitudinal movement of them [2];

- the rail block reliably without slipping connects to the crane beam and works as part of its section.

The drawing shows a rail block, section.

The rail block contains a pair of symmetrical rails 1 with one-sided soles. A pair of rails 1 is supported with soles on a rail 2 lining made of a rolling brand. The neck of the brand is oriented upward and forms a longitudinal centering ridge. A clip 3 is tightly mounted on the centering ridge and connected to the ridge by a finger 4 pressed into the through hole.

On the under-rail lining 2, ridges 5 are mounted symmetrically with respect to the vertical axis. Terminals 6 with horizontal sections are tightly inserted into the gap between the necks of the pair of rails and ridges 5. The free end of each of the terminals 6 is jacked from below by a bolt 7, the lower end of which is abutted in a horizontal section of the ridge 5.

The horizontal section of the ridge 5 is connected to the under-rail lining with 2 bolts (pins) 8 with a guaranteed tightness. The under-rail lining 2 is connected to the crane beam 9 also by bolts.

A pair of rails 1 receives vertical dynamic pulses P from the main wheel 10 of the crane and horizontal pulses T from one of the guide rollers 11.

The economic effect arose due to the following:

- reliable non-slip fastening of a pair of rails on a rail track and a rail block on a crane beam made it possible to take into account the material of the rails and rail track in the section of a crane beam and thereby significantly increase the endurance of the assembly and reduce its material consumption;

- ease of installation and dismantling of rails significantly reduces the complexity of this process.

Literature

1. Metal Structures: Designer's Handbook. / Ed. N.P. Melnikova - 2nd ed. M .: Stroyizdat, 1980 .-- 776s.

2. No. 358248. A.S. USSR. Nezhdanov K.K. and others. A method for replacing a crane rail: M., class. B 66 C 7/08, bull. No. 33, 1972.

Claims (1)

A rail block containing rails, an under-rail lining and terminals mounted on a crane beam, characterized in that the under-rail lining is made of a rolling tee, oriented upward, with a clip tightly mounted on the wall of the brand, connected with pressed fingers, symmetrically with respect to the vertical axis ridges having horizontal sections, forming two channels relative to the Tauri wall, a rail is inserted into each channel, one of the soles of which is cut off, the rails are located from the prima by pressing the lateral surfaces of the neck to the lateral surfaces of the cage and forming a symmetrical pair, the cut out soles of the rails are located under the cage, and on top of the cage it contacts the heads of the rails from their lower sides, in the gap between the outer surfaces of the necks of the pair of rails and the ridges are tightly embedded terminals having free ends wherein the free end of each of the terminals is jacked up by a bolt rested by the lower end into a horizontal section of the corresponding ridge, and the under-rail lining is connected to horizontal sections ridges by bolts or studs.