RU182683U1 - Traction housing of clearance-free coupling device - Google Patents

Abstract

A traction housing of a clearance-free coupling device is proposed, including a fork with eyes, a tail portion connected to it by traction bands to form an opening for the thrust plate and an absorbing apparatus, having an opening in the vertical wall of the fork connecting the space between the horns of the fork with the specified opening, characterized in that it is additionally introduced an emphasis in the form of a set pressure screw mounted on a thread in said hole, and means for locking it, for example, a mortise screw or a locking bolt, included th end with a thread-free end into the groove on the lateral surface of the stop. To increase the reliability of locking with a mortise screw, the stop may have a groove with a depth less than the height of the thread profile on it, or the bottom of the groove may have corrugation.

Description

The utility model relates to the field of railway transport, in particular to structural elements of clearance-free coupling devices.

In the present description, the signs “vertical”, “horizontal”, “along”, “across”, “longitudinal” are used in relation to the coupling device in the working position, the sign “front” means “located closer to the coupling head or mating coupling” , respectively, “rear” - “located further from the clutch plane or closer to the center of the car”.

The individual terms used in the present description have the following interpretation:

- coupling head - assembly unit of the coupling device, consists of a locking device and a shank, which is used to connect to the traction housing;

- traction housing - in the clearance-free coupling devices, a functional analog of the traction clamp of the automatic coupling SA-3, contains elements for accommodating the hinge of the coupling head coupled to it and an opening for placement of a thrust plate and an absorbing device therein. In the prior art it is sometimes called a traction clamp.

A clearance-free coupling device is known, including a coupling head with a shank fastened at the end with a spherical (ball) head of the hinge assembly, a traction housing with front and rear stops of the spherical head located therein, a stop plate and an absorption device, between the back stop and the stop plate in the vertical wall of the housing has a threaded hole in which a block for adjusting the moment of rotation of the spherical head is installed [RU No. 65847 U1].

A disadvantage of the known node is its technical complexity and lack of reliability due to the difficulty of reliable fastening of the front stop of the spherical head. The ball joint is an original element that requires high precision manufacturing, careful adjustment, reliable protection against moisture and dust.

The closest to the proposed technical essence and the achieved result is the traction housing of a clearance-free coupling device, including a U-shaped fork with eyelets for a finger of a spherical hinge, a tail part connected to it by pulling strips with an opening for a thrust plate and an absorbing device, and in a vertical wall plugs, there is a hole connecting the space between the horns of the plug with the specified opening [RU No. 149527 U1].

A disadvantage of the known site is the lack of durability. The thrust plate and the absorbing apparatus are rigidly clamped by the elasticity of the absorbing apparatus between the front and rear stops by the emphasis of the spinal beam of the car. But in the opening of the traction housing, the thrust plate and the absorbing device are installed with a gap between the rear of the vertical wall of the fork of the traction housing and the thrust plate. The gap is due to inaccurate sizes of all interacting elements. When the train is jerked and jerked, the thrust plate with the absorbing device and the vertical walls of the traction housing, colliding gradually, break each other, the accompanying loads accelerate the destruction of the hinge and coupling units, as well as lead to discomfort for passengers.

The technical result from the use of the proposed utility model is to increase the service life of the traction housing and the hitch as a whole and increase the comfort of passengers.

The specified technical result is achieved by the fact that in the known traction housing of the clearance-free coupling device, comprising a U-shaped fork with eyes, a tail part connected to it by traction strips with an opening for the thrust plate and an absorption device having an opening in the vertical wall of the fork connecting the space between the horns of the plug with the specified opening additionally introduced a stop in the form of a set pressure screw mounted on a thread in the specified hole, and means for locking it.

In addition, the emphasis has an internal multi-faceted recess on the end portion facing the plug.

In addition, the traction housing has a threaded hole in the lower part for locking the stop.

In addition, the means for locking is made in the form of a mortise screw.

In addition, the emphasis has an annular groove opposite the threaded hole in the lower part of the housing.

In addition, the depth of the groove is less than the height of the thread profile.

In addition, the bottom of the annular groove has corrugation.

In addition, the emphasis has longitudinal grooves interacting with the locking means.

In addition, the locking means is made in the form of a bolt, the end of which, designed to interact with the grooves, is free from thread.

In addition, the protrusion of the bolt head above the surface of the housing does not exceed the depth of the longitudinal grooves.

Due to the introduction of an emphasis in the form of an installation pressure screw mounted on a thread in the hole of the vertical wall of the fork of the traction housing, the resource of all elements of the traction device is increased, since the backlash between the traction housing (hereinafter referred to as the housing) and the thrust plate with an absorbing device breaking the device increases.

A device for locking the pressure screw prevents the appearance of play in the opening of the traction housing due to the self-unscrewing of this screw from vibrations and shocks, that is, increases the repeatability of the claimed technical result.

The presence of an internal multi-faceted recess on the end of the pressure screw facing the plug facilitates and simplifies installation and adjustment of the proposed device.

The implementation of the traction housing with a threaded hole in the lower part for the locking means simplifies the installation of this tool and monitoring its serviceability.

The implementation of the means for locking the pressure screw in the form of a mortise screw ensures the reliability of the locking, thereby increasing the repeatability of the claimed technical result.

The presence of an annular groove opposite the threaded hole in the lower part of the housing increases the maintainability of the device, since it removes the area of interaction of the locking and stop means from the threaded part of the walls of the stop hole.

Due to the fact that the depth of the groove is less than the height of the thread profile in the hole for stop, or the bottom of the groove has corrugation, reliability and durability of stop of the stop are achieved.

Due to the fact that the emphasis has longitudinal grooves interacting with the locking means, the reliability and durability of the locking are increased, and the force required for setting the locking means is reduced.

Due to the fact that the locking means is made in the form of a bolt, the end of which, designed to interact with the grooves, is free from thread, the stop fixation reliability is increased, since the possibility of a backlash due to crushing of the thread portion interacting with the walls of the groove is eliminated.

Due to the fact that the protrusion of the bolt head above the surface of the housing does not exceed the depth of the longitudinal grooves, the visual control of the correct tightening of the bolt and its end falling into the stop groove is facilitated.

The essence of the proposed utility model is illustrated by drawings.

In FIG. 1 shows a side view of a fragment of the proposed traction housing, which shows the hinge of the coupling device, the proposed emphasis and thrust plate.

In FIG. 2 shows an embodiment of a stop with a groove for a locking means having a grooved bottom.

In FIG. 3 shows an embodiment of an emphasis with grooves for a locking means and a recess for a key.

The proposed traction housing (Fig. 1) contains a fork / with horizontal horns 2 having vertical eyes, or holes 3, for mounting the pin 4 of the hinge 5, to which the shank 6 of the coupling head is connected.

The horns 2 of the fork 1 pass into the traction strips 7, further interconnected by the tail 8. The vertical wall 9 of the fork 1, the traction strips 7 and the tail 8 form an opening in which the thrust plate 10 and the absorption apparatus 11 are placed.

In the vertical wall 9 of the plug 1 there is a through threaded hole 12 with a horizontal axis. An emphasis 13 made in the form of a set screw is screwed into the hole.

The opposite end stops 13 abuts against the thrust plate 10, choosing a play between it and the traction housing and thereby preventing wear and destruction of the node.

Locking the stop 13 from self-unscrewing is possible by many well-known methods, but the following examples of locking by means of a mortise screw or a pair of bolt-grooves are most suitable.

In the lower part, the traction housing has a threaded hole 14 in which a locking means is wrapped, for example, a mortise screw or bolt 15 (Fig. 2) or a lock bolt 16. The mortise screw 15 has a sharp end that cuts into the body of the stop 13. Because this damages the stop thread, which makes it difficult to repair and periodically adjust the stop screw tightening, it is preferable that in the contact area of the cut-in screw with the stop, the thread is sharpened, at least partially with the formation of a groove 17. With partial thread grinding, more reliable contact of the end of the mortise screw 15 with the stop 13 due to the interaction of the end with the uneven surface of the groove. An even more reliable locking is achieved if the groove 17 has a diameter smaller than the inner diameter of the thread and is equipped with a knurled straight or mesh corrugation (Fig. 2). In the last two versions, the cut-in screw 15 has a sharp end, but a flat one, and not the screw 15 cuts into the stop 13, but the sharp ribs of a partially cut thread or corrugations into the flat end of the cut-in screw 15 made of a softer material than the stop 13. On in the drawings, the mortise screw 15 and the locking bolt 16, as an example, have a cylindrical head with a turnkey internal polyhedron.

The most reliable locking is achieved if the stop 13 has longitudinal grooves

18 in a section opposite the threaded hole 14, into which, when locked, enters the thread-free end 19 of the locking bolt 16 (Figs. 1 and 3). The length of the bolt 16 is chosen such that when wrapping it before contact with the bottom of the slot above the body surface, a part of the bolt head protrudes no more than the depth of the groove. This allows one to judge by eye the correct installation, since with the stop of the end 19 not in the bottom of the groove 18, but in the body of the stop 13, the head of the bolt 16 will protrude much more.

For ease of installation and adjustment from the side of the hinge 5, the emphasis 13 has an end-to-end multifaceted recess 20 (Fig. 3), which is used for mounting and adjusting the emphasis.

Installation and adjustment of the traction unit using the proposed traction housing is as follows.

In the traction housing suspended in the carriage beam between the front and rear stops, a thrust plate 10 and an absorption device 11 are pre-compressed by the device, then the device is removed, the absorption device is straightened, resting against the rear stop and, through the thrust plate 10, into the front one. The play, or free gap, between the thrust plate 10 and the vertical wall 9 is selected by wrapping the stop 13 in the threaded hole 12 to a predetermined moment. If in this case an emphasis 13 with longitudinal grooves 18 is used, then the probe checks the coincidence of the groove with the hole 14.

The mortise bolt 15, previously screwed slightly into the lower threaded hole 14, is tightened at a predetermined moment until it stops in the bottom of the groove 17. And the locking bolt 16 is screwed into the threaded hole 14 until the end of the thread 19 free from one of the grooves 18 enters its entire depth. The correct installation and tightening of the bolt 16 is checked by its protrusion above the surface of the housing, which should not exceed the depth of the grooves 18.

The use of the proposed housing in a clearance-free coupling device of the BSU-TM136 type increases the overhaul mileage by the state of the hinge, traction housing and thrust plate. Clanks and jerks associated with choosing a clearance in an analog device are absent in the coupling device with the proposed traction housing

Claims (10)

1. The traction housing of the clearance-free coupling device, including a U-shaped fork with eyes, a tail part connected to it by traction strips to form an opening for the thrust plate and the absorbing apparatus, having an opening in the vertical wall of the fork connecting the space between the fork horns with the specified opening, characterized the fact that it additionally includes a stop in the form of a set pressure screw mounted on a thread in said hole, and means for locking it. 2. Traction housing according to claim 1, characterized in that the emphasis has an internal multi-faceted recess on the end part facing the fork. 3. The traction housing according to claim 1, characterized in that it has a threaded hole in the lower part for locking the stop. 4. Traction housing according to claim 3, characterized in that the locking means is made in the form of a mortise screw. 5. Traction housing according to claim 3, characterized in that the emphasis has an annular groove opposite the threaded hole in the lower part of the housing. 6. Traction housing according to claim 5, characterized in that the depth of the groove is less than the thread profile. 7. Traction housing according to claim 3, characterized in that the bottom of the annular groove has corrugation. 8. Traction housing according to claim 3, characterized in that the emphasis has longitudinal grooves interacting with the locking means. 9. Traction housing according to claim 6, characterized in that the locking means is made in the form of a bolt, the end of which is designed to interact with the grooves, free of thread. 10. Traction housing according to claim 7, characterized in that the protrusion of the bolt head above the surface of the housing does not exceed the depth of the longitudinal grooves.

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