SU430813A1 - SELF-PROPELLED CHASSIS - Google Patents

Description

I

FIELD OF THE INVENTION The invention relates to agricultural machinery, namely, highly maneuverable self-propelled chassis.

Self-propelled chassis are known, containing a frame and four wheels fixed on it on vertical axes of rotation, the control levers of which are connected in pairs by hydraulic cylinders, upravl yush, and by turning the chassis.

The disadvantage of these chassis is a large turning radius, which is much larger than the cross bar of the self-propelled chassis base, which makes it necessary to distinguish wide turning lanes.

This deficiency limits the orientation of self-propelled chassis when performing work on small areas, and especially in warm houses and greenhouse facilities.

The purpose of the invention is to create a highly mobile self-propelled chassis, ensuring that it rotates around a point located in the plane of turning the side wheels, along a radius close to that of the transverse bug of the self-propelled chassis.

This is achieved by the fact that in the proposed self-propelled chassis, the side wheels are installed in pairs in traverses, the midpoints of which are articulated by a frame element.

FIG. 1 shows a self-propelled chassis,

front view; in fig. 2 - the same, top view;

in fig. 3 - the same, side view; in fig. four -

chassis rotation pattern; in fig. 5 - transport “th position of self-propelled chassis.

The chassis consists of a frame 1, two traverse 2, four forks 3, four wheels 4, two hydraulic cylinders 5, controlled their turn and wheels. Frame 1 with traverses 2 is connected with

the hinges 6. VGitki 5 have vertical axes of rotation 7 fixed in the cross-arms 2. The wheels are spaced apart by the width of the engagement of the working bodies.

Frame 1 can be interchangeable, depending on the type of working bodies mounted on it. The chassis frame can serve as the frame of the working body, for example, a combine harvester. In this case, traverses with wheels are attached to the combine from both sides.

On one traverse, an internal combustion engine with hydraulic pumps for the drive of wheels can be located, and on the second traverse - a cabin driver and a whole control system. For gears, wheels can be used.

hydromotors. (Engine with pumps, cabin and hydraulic motors are not shown in the diagram).

In the process of operation, the yoke 2 has the ability to rotate relative to the hinges 6. The wheels 4 rotate on axles x 7

with the help of new cylinders 5.

The movement of the unit along the race and its turn is shown in FIG. 4. The direction of movement of the unit along the ramp is made by changing the speed of rotation of the wheels of the right- or left-hand beam. At the end of the rut, one of the traverse stops. On the moving traverse, the wheels turn the dracy hydrocyls so that the turning radii of the wheels converge at one point located in the plane of rotation of the side wheels of the fixed traverse (as shown in Fig. 4). By rotating the wheels of the movable cross-bar, the head rotates around hinge 6 located on the fixed cross-bar in this case.

At the same time, the junction of the passage is not lost, as a result of which the process of turning around can be easily automated. Since the wheels are placed on the width of the working bodies, they always move in one place — at the junction of the aisles. The joints of the passages under the wheels of the chassis can be made in the form of tamped or hard-coated tracks, which will significantly reduce the load on rolling the unit itself. This is especially important when working on wheels in difficult conditions (overmoistened soil), since half of this (and often a large amount of power) is spent rolling it. When driving right along the tracks, the magnitude of the drag force will not depend on the soil moisture, as a result of which the wheel travel can work in any direction.

soil conditions, even if the soil is flooded with water, for example, when rice is cultivated.

In the transport position (Fig. 5), one traverse is shifted relative to the other forward, thereby reducing the width of the unit. Chases can be used for work not only in the field, but also in greenhouse greenhouse facilities. The transport position of the chassis is necessary only when moving from one site to another. Therefore, the wheels of the chassis can be not only pneumatic.

The presence of tracks with a hard surface to move on them wheels self-propelled

the chassis will eliminate the possibility of destructuring the soil by the chassis, will greatly facilitate the possibility of automatic driving of the chassis, which, in turn, will automate the entire

the work of the unit and produce it, according to a given program.

Subject invention

A self-propelled chassis containing a frame and four wheels, fixed on vertical pivots, the control levers of which are connected in pairs by hydraulic cylinders, characterized in that, in order to allow the chassis to rotate around a point located in the plane of rotation of the side wheels, the latter are installed in pairs in traverses, the middle of which is pivotally interconnected by a frame element.

Phi2 1

FIG. 2

ff / 2 3.

( five

Fig