RU204185U1 - TRACTOR-COUPLING DEVICE - Google Patents

Abstract

The utility model relates to the field of towing devices and is intended for coupling a tractor with a trailer with the possibility of reducing the oscillations of the trailer in the horizontal plane. The device consists of a drawbar 1, the end opposite to the hitch is made in the form of a toothed segment 2, installed with a gap on the vertical axis 3 of the frame 4 of the trailer, which engages with a gear wheel 5 connected by compression-tension springs 6 to the frame 4 in a plane perpendicular to the longitudinal axis of the trailer. In this case, the flywheel 5 is rigidly and coaxially connected to a pulley (not shown), which, in turn, is connected by a V-belt 7 to the flywheel 8. The proposed device, in contrast to the known ones, makes it possible to reduce the amplitude of trailer oscillations in the horizontal plane due to the introduction of an inertial link , preventing a sharp change in the direction of movement of the drawbar of the trailer. 1 ill.

Description

The utility model relates to the field of towing devices and is intended for coupling a tractor with a trailer with the possibility of reducing multidirectional deviations of the trailer in the horizontal plane.

Known towing device for connecting a tractor with a wheeled trailer, providing smoothing of dynamic loads at any of their values with different loading of the trailer. The device consists of a traction hydraulic cylinder rigidly connected to the trailer drawbar, a plunger with throttling holes and a traction hydraulic cylinder rod and a spring [1].

The disadvantages of the device include the complexity of the design, which makes it possible to regulate the resistance of oil overflow from one cavity of the traction hydraulic cylinder to another, as well as insufficient compensation of shock loads, for example, when the tractor starts off abruptly.

Known towing device, which contains a damping element made in the form of a leaf spring, a hydraulic shock absorber formed by a traction link, which is a body of a hydraulic shock absorber, a reservoir for a working fluid and a rod. A piston is located at one end of the rod, while the cavity of the reservoir is communicated with the cavity of the hydraulic shock absorber body by means of throttling holes made in the baffle pressed inside the hydraulic shock absorber body, while the baffle and the piston are equipped with a valve system [2].

The disadvantages of the device include insufficient compensation of shock loads both when the tractor starts off abruptly and on uneven roads due to the high inertness of the fluid flowing from the reservoir cavity into the cavity of the hydraulic shock absorber body and vice versa.

The proposed technical solution is aimed at stabilizing the movement of the trailer in the horizontal plane. Essence: stabilization of the movement of the trailer when driving on a winding road or a sharp deviation of the trailer from straight-line movement is achieved due to the inertial deceleration of the movement of the drawbar of the trailer in the horizontal plane.

This is achieved by the fact that, according to the proposed technical solution, the end of the drawbar, which is opposite to the hitching loop, has a toothed segment movably fixed on the vertical shaft of the trailer frame in the towing device containing a hitching loop, a drawbar and a rod, which meshes with a gearwheel connected compression-tension springs with a frame in a plane perpendicular to its longitudinal axis, and rigidly and coaxially connected to a pulley, which, in turn, is connected by a V-belt to a flywheel.

Such an embodiment of the device provides a decrease in the amplitude of trailer oscillations in the horizontal plane due to the introduction of an inertial link that prevents a sharp change in the direction of movement of the trailer drawbar.

Comparable analysis with the prototype shows that the claimed towing device meets the criterion of "novelty", as it has significant differences from the prototype: the end of the drawbar, opposed to the towing loop, has a toothed segment; the toothed segment of the drawbar engages with a toothed wheel connected by compression-tension springs to the frame in a plane perpendicular to its longitudinal axis; the toothed wheel is rigidly and coaxially connected to the pulley, which is connected by a V-belt to the flywheel.

The technical result from the use of the device consists in increasing the stability of the machine-tractor unit and the smoothness of its movement in the horizontal plane by increasing the inertia of the transmission of vibrations from the drawbar to the trailer.

The device is illustrated by the figure, which shows a top view of the towing hitch, and the following designations are introduced:

1 - drawbar;

2 - toothed segment of the drawbar;

3 - vertical axis;

4 - trailer frame;

5 - gear wheel;

6 - the axis of the gear wheel;

7 - compression-extension springs;

8 - V-belt;

9 - flywheel;

10 - flywheel axis.

The device (Fig.) Consists of a drawbar 1, the end opposite to the hitch is made in the form of a toothed segment 2 installed with a gap on the vertical axis 3 of the frame 4 of the trailer, which engages with a toothed wheel 5 mounted on the axis 6 and connected by springs compression-tension 7 with a frame 4 in a plane perpendicular to the longitudinal axis of the trailer. In this case, the flywheel 5 is rigidly and coaxially connected to a pulley (not shown), which, in turn, is connected by a V-belt 8 to the flywheel 9, which is movably mounted on the vertical axis 10 of the trailer frame 4.

The operation of the device is carried out as follows: when the drawbar 1 is deflected on the axis 3 of the frame 4 in the horizontal plane, the toothed segment 3 of the drawbar 1 drives the gear 5. Due to the deviation of the gear 5 on the axis 6 from the initial position, one of the springs 7 is stretched, and the other - shrinks, preventing an abrupt change in its position. At the same time, the pulley (not shown), with which the gear wheel is coaxially and rigidly connected, rotates through the same angle as the gear wheel 5, driving the V-belt 8, which deflects the flywheel 9, fixed on the axis 10, from its original position. The mass of the flywheel 9 prevents a sharp change in the position of the gear wheel 5 and, accordingly, the drawbar 1, and, in addition, prevents the occurrence of oscillatory movements of the springs 7.

The process of damping sudden changes in the direction of movement of the drawbar 1 in the horizontal plane will not depend on whether it is deflected clockwise or counterclockwise.

The proposed device, in contrast to the known, allows to reduce the amplitude of the trailer oscillation in the horizontal plane due to the introduction of an inertial link, which prevents a sharp change in the direction of movement of the trailer drawbar.

Information sources

1. Patent No. 2127198 IPC B60D 1/14. Traction coupling device for connecting a tractor with a wheeled trailer / Tsyptsyn V.I., Gamayunov P.P., Nekhoroshev V.V. Mandrik I.I., Mandrik P.I. Application No. 97119827/28 dated 02.12.1997, publ. 03/10/1999.

2. Patent No. 2213015 IPC B60D 1/14. Traction coupling / Gamayunov P.P., Gamayunov A.M., Pogorelov S.V., Sivitsky D.V. Application No. 2002107788/28 dated 26.03.2002, publ. September 27, 2003.

Claims (1)

A towing hitch containing a hitching loop, a drawbar and a rod, characterized in that the end of the drawbar opposed to the hitching loop has a toothed segment, movably fixed on the vertical shaft of the trailer frame and engages with a gearwheel connected by compression-tension springs to the frame in the plane , perpendicular to its longitudinal axis, and rigidly and coaxially connected to the pulley, which, in turn, is connected by a V-belt to the flywheel.

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