RU2787271C1 - Method for disassembly of the fastening assembly of the brake shoe of the triangel - Google Patents

Abstract

FIELD: railway transport.

SUBSTANCE: invention relates to the field of railway transport. When disassembling the mounting assembly of the triangular brake shoe, the guide roller 12 is screwed into the threaded hole of the triangular string 18 by means of a threaded protrusion 13 with a metric thread Μ10. A central bushing 9 is installed on the guide roller until the wedge ring 11 touches the central bushing. By rotating the handle 5 of the screw 4, the resilient element 16 is compressed, acting with the fifth screw 6 on the central sleeve, which has a groove 14 to prevent incorrect relative positioning of the heel and the central sleeve, while the central sleeve has an internal hole to ensure tolerance with the guide roller. The compressive force is transmitted from the heel through the central sleeve to the wedge ring and to the elastic element, and to extract crackers 17, 3-4 turns of the screw are required. Two released biscuits are removed, by rotating the screw handle, the elastic element is unclenched. By rotating the screw handle, the heel and the central sleeve are released from the interaction. The squeeze device is removed from the triangel frame, the central sleeve and the guide roller is unscrewed from the triangel string. The wedge ring is removed, the elastic element is removed, the tip of the triangle 20 is removed, the shoe of the triangle 19 is removed.

EFFECT: increasing the operational reliability of the squeeze device and ensuring the safety of work.

1 cl, 1 dwg

Description

The claimed invention relates to the field of railway transport and relates to methods for disassembling the mount of the triangular brake shoe of a railway car bogie.

A known method of assembling and disassembling the mount of the brake shoe triangel trolley railway car [RF patent for the invention No. 2254254, published 20.06.2005 in bull. No. 17], which consists in the fact that to assemble the brake shoe attachment assembly, a brake shoe, a triangel tip, an elastic element and a wedge ring are installed on the triangle. A shaft is screwed into the threaded hole of the triangel string, a bowl is installed on the shaft until it stops with a wedge ring. A nut is screwed onto the other end of the shaft, pressing the elastic element with a bowl and a wedge ring. With the elastic element pressed, crackers are installed in the conical grooves of the wedge ring and the triangel string, then the nut is unscrewed, the bowl is removed and the shaft is unscrewed. Disassembly of the brake shoe mount occurs in the following sequence. A shaft is screwed into the threaded hole of the triangel string, then a bowl is installed on the shaft until it stops with a wedge ring. A nut is screwed onto the other end of the shaft, pressing the elastic element with a bowl and a wedge ring. When the elastic element is compressed, crackers are released from the conical grooves of the wedge ring and the triangel string. The released crackers are removed, the nut is unscrewed, the bowl is removed and the shaft is unscrewed. After that, the wedge ring, the elastic element, the tip of the triangle and the brake shoe are removed.

This method of assembling and disassembling the mount of the triangular brake shoe of a railway car bogie is chosen as a prototype for the claimed invention.

The disadvantage of the above method of disassembling the triangular brake shoe mount is that it does not take into account stresses exceeding the allowable ones that occur in the threaded connection of the shaft and triangular string when the elastic element is pressed with a nut; as a result of applying this method, damage to the disassembled assembly is possible. Also, this method implies the need to use universal locksmith tools (for example, wrenches) to disassemble the triangular brake shoe mount, which negatively affects labor safety and leads to an increase in the range of tools used.

The task to be solved by the claimed invention is to develop a method for dismantling the attachment point of the triangular brake shoe of a railway car bogie, which makes it possible to carry out disassembly work without applying loads exceeding the limit values on the threaded part of the triangel string, thereby eliminating the possibility of damage to the thread part of the triangel string , and thus achieve an increase in the operational reliability of the squeeze device and ensure the safety of work when using the squeeze device.

The problem is solved due to the fact that in order to implement the method for disassembling the triangular brake shoe attachment assembly, the design of the squeeze device for disassembling the triangular brake shoe attachment assembly and the method of using this device are proposed, when using which, tensile loads on the threaded part of the triangle string are excluded.

The essence of the claimed invention lies in the fact that the method of disassembling the triangular brake shoe mount includes the following: a guide roller is screwed into the string of the triangel frame by means of a threaded protrusion made on the guide roller, then the central sleeve is installed on the guide roller and the assembly device is mounted and disassembly of the triangular brake shoe mount on the triangular frame by means of a base with a cutout that follows the cross-sectional contour of the triangular frame, after which, by rotating the screw handle of the device for assembling and disassembling the triangular brake shoe attachment assembly, compression of the triangel elastic element is performed by acting on the fifth screw on the central bushing and removing two released biscuits, by rotating the handle of the screw of the device for assembling and disassembling the mount of the brake shoe of the triangel in the opposite direction, remove the heel and the central sleeve from interaction, after which the device for assembling and disassembling the mount is removed of the brake shoe of the triangle from the frame of the triangle, and also remove the central bushing and remove the wedge ring, unscrew the guide roller from the triangle string, remove the elastic element, the tip of the triangle and the shoe of the triangle.

The essence of the claimed invention is illustrated by the drawing.

Fig. 1 - a method of disassembling the mount of the triangel brake shoe (isometry). Positions:

1 - base; 2 - rib; 3 - screw bushing; 4 - screw; 5 - handle; 6 - heel; 7 - mounting holes of the base; 8 - side of the central sleeve interacting with the fifth; 9 - central sleeve; 10 - side of the central sleeve interacting with the wedge ring; 11 - wedge ring; 12 - guide roller; 13 - protrusion of the guide roller with a metric thread; 14 - groove in the central sleeve made from the side of the heel; 15 - triangel frame; 16 - elastic element triangel; 17 - cracker; 18 - triangel string; 19 - triangel shoe; 20 - triangel tip.

When disassembling the mount of the triangel brake shoe, the guide roller 12 is screwed into the threaded hole of the triangel string 18 by means of a threaded protrusion 13 with a metric M10 thread. The central sleeve 9 is installed on the guide roller 12 until the central sleeve touches the wedge ring 11. The squeeze device is installed on the triangular frame 15, the base is fixed by means of the fixing hole 7, repeating the sectional contour of the triangel frame 15. By rotating the handle 5 of the screw 4, the elastic element 16 is preloaded, acting with the heel 6 of the screw 4 on the central sleeve 9, which has a groove 14 to prevent incorrect relative positioning of the heel 6 and the central sleeve 9, while the central sleeve 9 has an internal hole to ensure bearing with the guide roller 12. The compressive force is transmitted from the heel 6 through the central bushing 9 on the wedge ring 11 and on the elastic element 16, and extraction for crackers 17 requires 3-4 turns of the screw 4. Two released crackers 17 are removed, by rotating the handle 5 of the screw 4, the elastic element 16 is unclenched and released from the interaction of the heel 6 and the central bushings 9. Remove the release device from the frame of the triangel 15, the central sleeve 9 and the guide roller 12 is unscrewed from the string 18 of the triangel. Remove the wedge ring 11, remove the elastic element 16, remove the tip of the triangle 20, remove the shoe of the triangle 19.

The procedure for implementing the method for disassembling the triangular brake shoe attachment assembly (triangle must be securely fixed from possible movements during disassembly of the triangular shoe attachment assembly):

- screw the guide roller 12 into the string 18 of the triangel frame by means of the threaded protrusion 13 of the guide roller 12;

- install the central sleeve 9 on the guide roller 12;

- install the device on the frame 15 of the triangel by means of the base 1 with a cutout 7, repeating the contour of the section of the frame 15 of the triangel;

- by turning the handle 5 of the screw 4, compress the elastic element 16 of the triangle, acting with the heel 6 of the screw 4 on the central sleeve 9, which has a groove 14 to prevent incorrect relative positioning of the heel 6 and the central sleeve 9, while the central sleeve 9 has an internal hole to ensure tolerability with a guide roller 12, the compressive force is transmitted from the heel 6 through the central sleeve 9 to the wedge ring 11 and to the elastic element 16, and to extract the crackers 17, 3-4 turns of the screw 4 are required;

- extract two released crackers 17;

- turn the handle 5 of the screw 4 to disengage the heel 6 and the central sleeve 9;

- remove the device for assembling and disassembling the triangular brake shoe attachment unit from the triangular frame 15;

- remove the central sleeve 9;

- remove wedge ring 11;

- unscrew the guide roller 12 from the triangel string 18;

- remove the elastic element 16;

- remove the tip of triangel 20;

- remove the shoe 19 triangel.

The technical result of the claimed invention lies in the fact that the method allows for disassembly of the attachment of the triangular brake shoe of a railway car bogie without applying loads exceeding the limit values on the threaded part of the triangular string, eliminating the possibility of damage to the threaded part of the triangel string and thereby achieving an increase in the operational reliability of the release valve. devices and ensure the safety of work when using a squeeze device.

At present, technological documentation has been developed for the claimed invention and production has been organized.

Claims (1)

A method for disassembling the triangle brake shoe attachment assembly, which consists in screwing the guide roller into the triangle frame string by means of a threaded protrusion made on the guide roller, then installing the central bushing on the guide roller and mounting the device for assembling and disassembling the triangel brake shoe attachment assembly on the frame triangel by means of a base with a cutout that follows the contour of the section of the triangel frame, after which, by rotating the screw handle of the device for assembling and disassembling the brake shoe attachment unit, the triangel is compressed by the elastic element of the triangel, acting on the fifth screw on the central bushing, and two released crackers are removed by rotating in the opposite direction the screw handles of the device for assembling and disassembling the triangular brake shoe mount remove the heel and the central bushing from interaction, after which the device for assembling and disassembling the triangel brake shoe mount is removed from the triangel frame, and also remove the central bushing is removed and the wedge ring is removed, the guide roller is unscrewed from the triangular string, the elastic element, the triangular tip and the triangel shoe are removed.

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