SU1602408A1 - Agricultural machine trailer chassis - Google Patents

Abstract

The invention relates to agricultural machines and can be used in agricultural machines for working on overmoistened soils. The purpose of the invention is to increase the patency. The trailer chassis of an agricultural machine contains frame 1, needle 2, propellers 3 and supporting ski 4. To improve the permeability of the chassis on the over humid soil between propulsion 3 under the center of the chassis, it is set at a height H from the line connecting the lower points of the propellers 3 equal to the depth of them into the soil at its normal moisture, ski 4 by means of two links with the formation of a hinged four-otter, the lower base of the four-ryt-jaw is located on the ski, and the ski is located above the supporting surface of the propellers. When the chassis moves along overmoistened soil, the movers 3 sink more, and ski 4 takes up most of the chassis weight, while due to the ski training on the soil, the rear end of ski 4 is lowered and the front end is lifted. At the same time, the pressure of the soil on the ski pitch 4 increases. This pressure does not allow the ski 4 to turn and fall back, and the ski 4 is in equilibrium. 1 il.

Description

The invention relates to agricultural machinery and can be used in agricultural machinery for working on waterlogged soils.

The purpose of the invention is to improve cross-country ability.

The drawing shows a diagram of the chassis in the cross section of a longitudinally vertical plane passing through the ski.

ShAssi contains a frame 1, a spoke 2, movers 3 and a support ski 4, To improve the terrain of the chassis on re-moistened soil between the movers 3, a ski 4 is installed under the center of the chassis at a height h from the line connecting the lower points of the movers 3, which is equal to their drowning in soil at its normal moisture content. Ski 4 is mounted on two rigid links 5. Each: link 5 is attached with the upper part to the chassis frame 1 by means of a hinge, and the lower part is also hinged - 25 to the ski 4 with the formation of a hinged four-link in the form of a trapezoid. Thanks to the articulation of the link. * Nya 5 have the ability to rotate in the longitudinally vertical plane of zo and form the sides of the quadrangle in this plane.

The chassis with ski 4 operates as follows.

When the chassis is operating under normal operating conditions (on uncontaminated soil) · the ski 4 is raised to the transport position (closer to the spoke 2) by moving, for example, the upper hinge of the front link 5 forward along the spoke 2 to using a hydraulic cylinder or other mechanism.

In the presence of areas with waterlogged soil, ski 4 is lowered into the work _; whose position is at a height of h. Adjust- 45 ku height h ski location 4 from-! relative to the holders 3 of the chassis produce the same way by moving the upper part (hinge) of the front link 5 forward or backward. i _so

When the chassis moves with the ski 4 lowered into the * working position, the latter slightly touches the soil or is located next to it. Movers 3 while working in the chassis without a ski 4, and traction 55 drag of the chassis is equal to the effort to roll it.

If the chassis is over-wetted: the soil ... movers 3 drown more, and ski 4 takes on most of the weight of the chassis. Due to the friction of the ski 4 on the soil while the chassis is moving forward (in the direction of the arrow), links 5 rotate around the upper hinges counterclockwise, and the ski moves slightly backward. In this case, the rear end of the ski 4 (heel) is lowered, and the front is lifted. At the same time, the pressure of the soil on the heel of ski 4 increases. This pressure prevents the ski 4 from turning and retreating. Ski 4 comes into equilibrium. Due to the fact that the front end (toe) of ski 4 floats up, it does not bend and more effectively supports the chassis on the soil surface. If before the ski 4 there is a lump of soil displaced with stems, a stone or other obstacle, the effort to move the ski 4 increases. This is an effort yet. takes the ski 4 back more, ^ its front end is still lifted, and comes into the obstacle. After passing the obstacle, the soil pressure is on. the heel of the ski 4 returns it to the equilibrium state in which it normally works.

When the chassis is operating on waterlogged soil, it becomes necessary to move backwards. In this case, also due to friction on the soil, the ski 4 slightly moves away relative to the chassis against its movement, its heel rises, and the ski also slides back better and does not bend.

When the unit moves sharply back and forth, the chassis rolls on the ski 4, but the movers 3 do not bury into the soil.

Thus, the proposed design of the ski 4 for the chassis works both when moving forward ', and equally when moving it back, and also allows you to swing the chassis to exit the mud.

In a particular case, a ski 4 with links 4 can be symmetrical in the longitudinal-vertical plane with the upper hinges at the same height. In this case, an equilateral trapezoid is formed in the indicated Plane, the smaller base of which is facing the ski 4. When moving on waterlogged soil, ski 4 works in exactly the same way both when moving forward and when moving backward (links 5 rotate by the same angle).

Claims (1)

Claim A trailer chassis of an agricultural machine comprising a frame with support wheels and ski, characterized in that, in order to increase cross-country ability, the ski is mounted on the frame using two links with the formation of an articulated four link link, with its smaller base located on the ski, which is located above the support surface movers. Editor N.Mvshchtskaya Compiled by B. Nikolayev Tehred L. Serdyukova Corrector T. Paly Order 3338 Circulation 497 Subscription VNIIIPI of the State Committee for Inventions and Discoveries at the State Committee for Science and Technology 1 13035, Moscow, Zh-35, Raushskaya nab., D. 4/5 Production and Publishing Plant Patent, Uzhgorod, st. Gagarina, 101