RU161165U1 - DEVICE FOR RIDING THE RAILWAY OF THE BRIDGE CRANE - Google Patents

Abstract

1. A device for straightening rail tracks of an overhead crane, comprising a grip in the form of a U-shaped overlay, on the vertical walls of which are clamping and power bolts, characterized in that the height of the vertical walls exceeds the distance from the top of the rail head to the center of gravity of the rail section by the height of its base, while all bolts are placed in the zone of a horizontal plane passing through the center of gravity of the rail section, with a deviation of its vertical position by ± 20 mm, and on vertical the holes are made between the clamping walls and the power bolts. 2. The device according to claim 1, characterized in that it is additionally equipped with a removable power element in the form of a stud, bolt or staple, with the possibility of fixing it on a vertical wall of the grip, and a support bracket with the possibility of fixing it on the passage gallery. The device according to claim 1, characterized in that on the horizontal shelf of the capture fixed handle equipped with a flexible safety rope.

Description

The utility model relates to tools and can be used in the repair of the rail track of an overhead crane.

The safe operation of hoisting cranes largely depends on the serviceability of the rail tracks, therefore, the Federal Norms and Rules in the Field of Industrial Safety “Safety Rules for Hazardous Industrial Facilities that Use Hoisting Structures” (hereinafter - FNP) impose special requirements on the process of operation, checking the condition and fault detection rail track, according to which the rail track for the supporting and suspended lifting structures (hereinafter - PS) on the rail track should provide free, without jamming the passage of the SS installed on it throughout the section of their passage.

Similar requirements were issued by RD 50: 48: 0075.03.05. Recommendations on the design and safe operation of elevated crane tracks. - M.: Scientific Production Center “Way K” CJSC, Section 7.

Limit values of deviations of the rail track from the design position should not exceed the values specified in the Federal Law. In particular, the mutual displacement of the ends of the joined rails in the plan should not exceed 2 mm, and the narrowing or expansion of the track gauge (deviation of the span in the plan) should not exceed 15 mm. Rail tracks in operation are subject to ongoing inspection, periodic comprehensive inspection, maintenance and, if necessary, repair.

Checking the condition of the rail track of the overhead crane includes a shift inspection carried out by the crane operator and a routine check of the condition, which is carried out by the person responsible for maintaining the substation in working condition after every 24 shifts, and at least once every year by the specialist responsible for the production control during operation PS.

In case of malfunctions, the rail track is repaired.

The well-known "Device for straightening crane beams" (USSR, AS No. 406372, class E01B 33/02, 1968), containing a trolley, main and auxiliary jacks and grip, and "Device for straightening crane beams" (USSR, and S. p. No. 998 306, class B66C 7/00, E01B 33/02, 1983) comprising a trolley, a platform suspended from the trolley on rods, a gripper, main and auxiliary jacks.

To repair overhead crane tracks and crane beams of bridge cranes, they also use the “Device for preventing collapse, straightening and increasing the bearing capacity of a crane beam” (Russia, patent for invention No. 2209760, IPC B66C 7/00) and “Method for straightening split crane beams of bridge cranes "(Russia, patent for invention No. 2235675, IPC B66C 7/00, B66C 7/00).

As a prototype of the proposal, “A device for shifting the ends of the joined rails of crane tracks of an overhead crane” was selected (Russia, utility model patent No. 120598, IPC 7 B25B 1/18), the design of which includes a U-shaped overlay, the size of which between vertical walls is exceeds the width of the head of the joined rails, and the size in height is the height of the head of the rails. At least two pairs of clamping bolts of one rail and bolts are placed on the vertical walls of the lining to create a force effect on the other rail.

The disadvantage of the prototype is the limited use of the device, aimed only at eliminating the displacement of the rail heads during straightening of overhead crane ways of bridge cranes.

The objective of the utility model is to expand its functionality when performing repair work on the rail track of a bridge crane and increase reliability.

The problem is solved in that in a device for straightening rail tracks of a bridge crane, which comprises a rail grip in the form of a U-shaped lining installed on the rail joint, the size between the vertical walls of which exceeds the width of the head of the rails being joined, and the height is the height of the rail head , and clamping bolts of one rail and bolts placed on the vertical walls of the lining to create a force effect on the other rail, the height of the vertical walls exceeds the distance from the top of the rail head to the plane of location of the center of mass of the rail section by the height of its base, while all bolts are placed in a horizontal plane passing through the center of mass of the rail section, or at a distance of ± 20 mm from it, and on the vertical gripping walls in the spaces between clamping and power bolts at least one hole is made.

In addition, it is additionally equipped with a removable power element in the form of a bolt or eye, with the possibility of fixing it on a vertical wall of the grip, and a support bracket with the possibility of fixing it on the passage gallery.

In addition, a handle equipped with a flexible safety rope is fixed to the horizontal shelf of the grip.

The combination of distinctive features of the proposal allows to eliminate the disadvantages of the prototype, namely, it increases the reliability and safety of the work with the application when straightening the rail track of the bridge crane at a height, both in terms of fulfilling the requirements of the FPP for restoring the maximum deviations of the mutual displacement of the ends of the joined rails in plan and the requirements according to the deviation of the size of the span of the rail track (parameter - narrowing or expansion).

The essence of the utility model is illustrated by drawings, where in FIG. 1 shows a general view of the crane track yarn of a bridge crane and the installation of a device for straightening the rail track on it, FIG. 2 is a view A in FIG. 1, in FIG. 3 is a section BB in FIG. 2, in FIG. 4 is a section BB in FIG. 2, in FIG. 5 is a section GG in FIG. 1 for the case of straightening using a bolt and an additional bracket as a jack, in FIG. 6 is a section GG in FIG. 1 for use when straightening an eye bolt.

The device for straightening the rail track of an overhead crane is made in the form of a lining 1 having a U-shaped cross-section, which is installed on the joint of rails 2 and 3. The size between the vertical walls 4 of the lining 1 exceeds the size of the rail head 5. The height of the vertical walls 4 exceeds the distance from the top of the rail head 5 to the plane of the center of mass 6 of the rail section by the height of its base 7. On the vertical walls 4 in the horizontal plane passing through the center of mass 6 of the rail section, or at a distance of ± 20 mm from it placed two pairs of bolts 8, designed to clamp the lining 1 on the rail 2, power bolts 9, acting as a shear jack of the rail 3. In the spaces between the clamping 8 and power 9 bolts made at least one hole 10. In the threads e eyelet hole 10 is set, made in the form of eyebolts 11 and designed to engage the energizer, indicated by arrow 12, as a hand winch which is assigned to the support beam may be used. A washer 14 and a bolt 15 are installed in the smooth hole 13 (these parts are laid before installing the lining 1 on the joint of the rails 2 and 3). The device is additionally equipped with a bracket 16 with the possibility of fixing it on the passage gallery 17 using fasteners or by welding. To create a shear force, nuts 18 and 19 are screwed onto the bolt 15. A handle 21 and a flexible safety halyard 22 are fixed on the horizontal shelf 20 of the lining 1.

The operation of the device.

The overlay 1 is installed on the joint of rails 2 and 3, fixed by clamps 23 on the gallery 17.

The case of alignment of the ends of the rails 2 and 3.

The trim 1 is fixed with clamping bolts 8 on the rail 2. The bolts 9 and the clamps 23 of the rail 3 are loosened. By screwing the bolts 9 on one side, the rail 3 is shifted to the moment either until the clearance previously set by the bolts 9 on the opposite side of the lining is eliminated, or until the heads of the rails 2 and 3 are aligned with visual inspection to align the heads or the bases of the rails. After aligning the ends at the junction of the rails, the rails are fixed with clamps 23. The lining 1 is removed from the rails.

Case of repair of a track of a rail track (parameter narrowing or expansion of a track).

When leveling, the need for the displacement of one rail filament towards the span (narrowing of the span) was revealed.

The cover 1 is fixed with all bolts 8 and 9. A nut 18 is screwed on the bolt 15. A bracket 16 is fixed on the gallery 7. A gap is established between the nut 19 and the wall of the bracket 16, by which the rail thread must be shifted towards the span (the bolt head 15 is rested in the neck of 24 rails). The clamps 23 are loosened. Rotating the nut 18, the rail thread is shifted until the surfaces of the nut 19 and the bracket 16 touch. The position of the rail thread is fixed by clamps 23. Repair is complete. Perform a control measurement of the span. Dismantle the bracket 16.

When leveling, the need for the displacement of one rail thread away from the span (expansion of the span) was revealed.

Option I. The lining 1 is fixed to the rails 2 and 3 with all bolts 8 and 9. To straighten the rail, use the bolt 15 above, the bracket 16, the nuts 18, 19, the washer 14. The clamps 23 of the rails 2 and 3 are loosened. Between the surfaces of the bracket 16 and the nut 18, a gap is set, by the amount of which it is necessary to move the rail thread away from the span. The rail thread is moved by pulling it through the lining 1 by rotating the nut 19 until the surfaces of the nut 18 and the bracket 16 touch. Next, operations similar to those described above are performed.

Option II. For straightening, an eye bolt 11 and a manual winch, indicated by arrow 12, are used. In gallery 7, a mark is made from the side surface of the base to which the rail thread must be moved. Then, using a manual winch through the lining 1, the rail thread is pushed to the desired size. Further actions are performed similarly to the actions specified in option I.

During the repair work, the pad 1 is insured against falling down with the help of a safety rope 22 attached to the supporting elements of the gallery (not shown in the drawing).

At the enterprise, a prototype of a device for straightening rail tracks (rails of the type KP 70, KP 75, KP 80 and KP 100) of bridge cranes with a lifting capacity of 10-50 tf was developed, manufactured and tested. The dimensions of the lining are as follows: the distance between the vertical walls is 110 mm, the width is 130 mm, the height is 100 mm, the distance from the horizontal shelf to the plane of installation of the clamping and power bolts is 70 mm, which are used as M 24 × 50 bolts.

Between the holes for clamping and power bolts, a hole M24 is made on one vertical wall, and ⌀24 on the opposite wall.

The created device allows you to expand the scope of application of the device during the straightening of overhead crane tracks of bridge cranes, to increase the reliability and safety of performing these works at height.

The proposal is recommended for implementation.

Claims (3)

1. A device for straightening rail tracks of an overhead crane, comprising a grip in the form of a U-shaped overlay, on the vertical walls of which are clamping and power bolts, characterized in that the height of the vertical walls exceeds the distance from the top of the rail head to the center of gravity of the rail section by the height of its base, while all bolts are placed in the zone of a horizontal plane passing through the center of gravity of the rail section, with a deviation of its vertical position by ± 20 mm, and on vertical the walls of the capture in the gap between the clamping and power bolts made holes. 2. The device according to claim 1, characterized in that it is additionally equipped with a removable power element in the form of a stud, bolt or staple, with the possibility of fixing it on a vertical wall of the grip, and a support bracket with the possibility of fixing it on the gallery through passage. 3. The device according to claim 1, characterized in that on the horizontal shelf of the capture fixed handle equipped with a flexible safety rope.

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