SU144060A1 - Device for connecting wheeled tractors or tractors and self-propelled tillage tools using the tandem system - Google Patents

Description

It is known a device for connecting wheeled tractors using a tandem system, in which the tractor pairing is carried out using separate coupling elements mounted on each tractor. For example, a steel pipe is installed on the front tractor along its longitudinal axis using a special welded cantilever mounted on the rear end of the transmission housing, and under the front part of the rear tractor is placed a multi-disk turntable mounted on the frame with an auxiliary holder. The presence of the vertical pivot ensures the rotation of the disks around the vertical axis, and the connection of the pipe and the disk - a rotation along the longitudinal axis.

With such a device, large reworkings of tractors, removal of the front axle, extension to the frame of auxiliary derdle rigs, etc., are required. The dismantling of tractors for using them as separate tractors is also difficult.

The device made according to the invention, lischeno these shortcomings. The essence of the invention is that between the tractors there is a hinge with two degrees of freedom, connected by brackets with the front and rear tractors.

The bracket mounted on the front tractor crankcase may have a horizontal platform with a turning circle mounted on it, the upper part of which is connected by a horizontal axis with a bracket mounted under the front of the rear tractor frame.

 144060

Alternatively, the front tractor bracket is made in the form of a hollow shaft that carries the slewing ball bearing yoke, the fork-shaped flange of which is connected to the fixed vertical shaft mounted on the rear tractor frame.

FIG. 1, 2, and 3 depict variants of the device for connecting tractors, side view; in fig. 4 - details of the device.

A second tractor 2 is coupled with the tractor / so that the front wheels 3, 4 are raised. This is achieved by attaching a detachable bracket 6, having flanges 7 with holes, to the crankcase 5 of the rear axle of the front tractor 1. A detachable bracket 8 is attached to the frame of the rear tractor 2, on which a disk friction bearing 9 is fixed, one disk of which has flanges 10. In holes of flanges 7 and 10, pins 11 are vertically inserted, connecting both brackets. The tractors can be rotated on a pivot 11 around a vertical axis and with the help of a friction bearing 9 around a horizontal axis. Such a device is technically simple and affordable to manufacture with low cost. After uncoupling, the tractors are ready for operation separately.

According to the second variant, the bracket 12 is removably fastened on the crankcase 5 of the rear axle of the front tractor / (Fig. 2). On its horizontal platform 13 there is a turntable - friction disc bearing 9.

The upper disc 14 passes into flange / 5, which can move between two bearing bushings 17 of the rear tractor 2. A pin 18 is inserted through the opening of the flange J5 and bearing bushings 17. With this coupling, the tractors can rotate around the longitudinal axis of the pin 18 and the vertical axis of the pivot bearing 9 .

Another embodiment of the device is shown in FIG. 3. A hollow shaft 19 is fastened to the crankcase of the tractor's driving axle / flange on the flange 19. The flange of the hollow shaft 19 can be made in the form of a crankcase for a gear or chain drive, which, if necessary, covers the large difference in the distance between the axles of the cardan and driven shafts. A sleeve 20 is put on the hollow shaft 19, resting on the ball bearing 21, it can be rotated around the longitudinal axis of the shaft. On one side, the yoke 20 ends with a fork-shaped flange 22, in the holes x of which there is a vertical kingpin 23. This king pin is mounted on the tractor 2 with the help of a fork-shaped support 24 and a support of the flange 25.

If the king pin 26 consists of two tea cups sitting in the openings of the flange 22 and the support 24, then the joint shown in FIG. 4 is obtained. In this joint, the drive shaft 27 is set so that the axis 28 of the pin 26 completely coincides with the center of the joint 29 of the cardan shaft shaft. With the help of the universal drive shaft, the power is transmitted from the front tractor power take-off shaft / back to the tractor driven axle shaft 2.

Subject invention

Claims (3)

1. A device for connecting wheeled tractors or tractors and self-propelled tillage tools according to the "tandem" system, characterized in that a hinge with two degrees of freedom is installed between the tractors, connected by means of brackets with the axle housing of the front tractor and the front part of the EO frame, for example, by supporting front axle rear tractor. 2. The form of the device according to claim 1, wherein the arm mounted on the crankcase rear axle of the front tractor has a horizontal platform on which a turntable, the upper part of which is connected by a horizontal axis with a bracket mounted under the front of the rear tractor frame. 3. The form of the device according to claim 1, characterized in that the bracket attached to the rear axle housing of the front tractor is made in the form of a hollow shaft carrying the sleeve of a rotary ball bearing, the forked flange of which is connected to a fixed vertical king pin attached to the front end the rear tractor frame or the self-propelled gun chassis, the pin may be solid or made from two separate parts. 7 // VuzJ isyR / o, G5, Rig.g.