Trailer-train draw-and-coupler gear

FIELD: transport engineering; railless vehicles.

SUBSTANCE: proposed trailer-train draw-and-coupler gear contains ball head made up of upper and lower parts provided, respectively, with recess and boss, and coaxially arranged vertical holes accommodating connecting pin and pin position retainer. Connecting pin is rigidly coupled with upper part of ball head and is provided with thread interacting with mating thread made in vertical hole in lower part of ball head. Thread cut on side generating surface of boss in lower part of head is in meshing with threaded surface of recess in upper part of said ball head.

EFFECT: improved reliability of trailer-train draw-and-coupler gear.

1 dwg

 

The present invention relates to the field of trackless vehicles and can be used in the construction of various combinations consisting of passenger cars and trailers.

You know trailer hitch trailer described in the book (the authors Melik-Sarkisyants A.S., Vinokurov, Y.M. Trailers for passenger cars. M.: Transport, 1979, where p.51, 41, p.52, RIS and so on shows such devices, and on p.64, RIS and RIS and RIS, p.65 shows the locking device to them. Such towing device consists of a ball that ends drawbar curved, interconnected with a hemispherical head is available at the drawbar of the trailer. To exclude rascepa trailer drawbar trailer mounted lock, made in the form of a spring-loaded lever and provided with a lock. The disadvantage of this trailer hitch is a low reliability in operation due to the possible movement of the latch under the action of frictional forces between the ball and hemispherical head, forgetfulness driver installation retainer at the time of coupling with a trailer, etc.

It is also known trailer hitch-trailer trucks on the application number 20021304887/11 from 13.11.02 on which FIPS RF presents the decision on the grant of a patent for invention dated 22.01.04, Otakeho device ball head consists of two parts, connected by means of a protrusion and a depression made on the mating surfaces, said parts ball Golovko have aligned openings in which is located a fixed finger with ball retainer. Despite its simpler design in comparison with analogue and reliability of these devices has a significant disadvantage in that during the operation of trains in heavy traffic conditions, under the action of dynamic loads in the vertical plane of the ball coupling, the potential failure of the latch, and then may be rescap links trains.

Therefore, the aim of the invention is to improve the reliability of the coupling parts train.

This objective is achieved in that the connecting finger is rigidly connected with the upper part of the ball coupling and threaded interacting with the response made in the vertical hole of the bottom part of the ball head, and on the side forming surface of the projection at the lower part thereof is also threaded in contact with the threaded surface of the hollow upper part upomanutoi ball head.

The drawing shows a trailer hitch for the trailer, cut.

Trailer hitch for the trailer consists of a body 1 of the drawbar within which is movably top cha is RT 2 ball head. To the latter by means of the pins 3 is attached the connecting finger 4, threaded 5 and the recess 6 for the ball 7 of the latch, a spring-loaded compression spring 8 by means of a screw 9. In the opening 10 of the bottom part 11 of the ball coupling is also threaded 12, similar to the thread 5. On top of the 2 ball head has a depression 13 and it made the thread 14 in contact with the thread 15, chopped on the ledge 16 of the lower part 11 of the ball head. The lower part 11 of the ball head is made in one piece with the bracket 17.

Works trailer hitch for the trailer as follows.

For uncoupling of the parts of the train (on the drawing vehicle and trailer not shown) to the housing 1 tow hitch also not shown in the drawing and it belongs to the trailer) on the arrow And make the effort (the force may be created for example by the hands of the driver of the car or using the lever in the form of scrap), and due to the presence of the thread 5 and 12 of the connecting finger 4 receives a rotation around its longitudinal axis, for example by the arrow B, as the bottom part 11 of the ball coupling is fixed (to allow rotation of the finger 4, you can follow the thread 5 and 12 long stroke). As soedinenii finger 4 rigidly, by means of pins 3, is connected with the upper part 2 ball head, and it will start to rotate in the same clockwise In, they minimize their carving 14 through the 15, and to move together with the connecting finger 4 and the housing 1 of the tiller in the direction of arrow A. This movement of the connecting finger 4 will create a force on the ball 7, which is elastically deformity the compression spring 8 in the direction of arrow C, and will provide out of the undercut 6, and therefore, will be released from fixation in this polozhenii connecting finger 4. As soon as the thread 5, 12, 14, and 15 will cease to communicate with each other, the housing 1 of the drawbar together with the upper part 2 of the ball coupling and connecting finger 4 remain on the drawbar of the trailer, and then the car (not shown) with bracket 17 (connection bracket 17 with the car is also not shown in the drawing) and the lower part 11 of the ball head can realize independent movement of the trailer. For coupling the links of a combination of the above-described operation is performed in the opposite direction of the arrows And that will eventually allow the threads 5, 12, 14 and 15 to produce the connection of the upper part 2 ball head with its lower part 11. After the ball 7 of the latch will enter the recess 6, the rig is ready to move.

Feasibility advantage of the proposed technical solutions in comparison with the known obvious, as it allows to increase the reliability of coupling links of trains in service.

Trailer hitch for the trailer, mainly flowing what about, contains ball head made of composite of the upper and lower parts, respectively provided with a depression and a protrusion and coaxially spaced vertical holes placed in them connecting finger and lock its position, characterized in that the connecting finger is rigidly connected with the upper part of the ball coupling and threaded interacting with the response made in the vertical hole of the bottom part of the ball head, and on the side forming surface of the projection at the lower part thereof is also threaded in contact with the threaded surface of the hollow upper part of the mentioned ball head.



 

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