RU21187U1 - UNIVERSAL TRANSPORT AND TECHNOLOGY AGRICULTURAL MACHINE - Google Patents

Description

MPK V62D 63/00

Universal transport and technological agricultural machinery

The utility model relates to transport and technological agricultural machines and can be used in agriculture as a tractor or agricultural chassis to perform various agricultural and transport operations on various soils, especially with low bearing capacity, and roads.

Known transport and agricultural machinery, for example, the tractor LTZ-155, containing an engine and four-wheel drive four-wheel chassis on pneumatic tires (magazine "Spepavtotekhnika 2000, Third Rome, 2000, p 57).

Such agricultural machines are used to perform various transport and technological agricultural work. However, the possibilities of their use, especially on loose soils with low bearing capacity, are limited. This is due to the large (over 1.0 kgf / cm2) pressure on the soil created by the wheels of the agricultural machine, which leads to the destruction of the soil structure and a decrease in the cross-country ability of the machine due to the formation of a track under its wheels.

For a given load on the wheel, ground pressure is determined by the total stiffness of the wheel with the tire, characterized by the mass ratio /

the last to its volume, and the internal air pressure in the tire,

In agricultural tires, known from the prior art, the ratio of tire mass to its nominal volume (see below) is 150,240 kg / m, and the internal pressure is 1.5-2.5 kgf / cm.

The objective of the utility model is the creation of a universal transport and technological agricultural machine on pneumatic tires, providing pressure on the soil OD - 0.8 kgf / cm.

This problem is solved by using wheels with pneumatic tires of ultra-low pressure of low stiffness.

For this, in a transport-technological agricultural machine containing an engine and four-wheel drive four-wheel chassis on pneumatic tires, the ratio of the mass of each tire to its nominal volume, determined by the expression V 3.14 VN (d + H), is 30-80 kg / m where: V is the conditional volume of the tire, B is the width of the tire profile, m; H - tire profile height, m; d is the landing diameter of the tire, m;

The internal air pressure in the tires is 0.06 - 0.7 kgf / cm;

Tires are tubeless.

The transport and technological plant is equipped with a farm machine.

a device for attaching and driving mounted and trailed agricultural implements.

The transport and technological agricultural machinery is equipped with a tank.

The transport and technological agricultural machine is equipped with a body with folding sides.

The ratio of the mass of each tire to the nominal volume in the range of 30-80 kg / m provides the total stiffness of the wheel with the tire, necessary to create pressure on the soil of 0.1-0.8 kgf / cm.

When the values of this ratio are less than 30 kg / m3, the tire’s own stiffness and the stability of its rubber-cord sheath at low internal pressures sharply decrease. As a result, the controllability of the machine is significantly impaired.

With values of this indicator, large 80 kg / m is impossible

provide pressure on the soil less than 0.9 kgf / cm due to an increase in the total stiffness of the wheel with the tire.

Changing the internal tire pressure in the range of 0.06-0.5 kgf / cm allows you to change the pressure on the soil from 0.1 to 0.8 kgf / cm

depending on the type of soil and its bearing capacity. With an internal tire pressure of 0.5 - 0.7 kgf / cm, the agricultural machine can be used for transport work on dirt roads and paved roads.

Tubeless tires reduce the weight of wheels with tires and make it easier to increase the grip weight of the agricultural machine by filling the inner cavity of the tires with water.

The presence of devices for mounting and driving mounted, semi-mounted and trailed agricultural implements, as well as a tank and a body with folding sides, expands the technological capabilities and the range of use of the agricultural machine for various types of agricultural work, including irrigation, transportation and the application of mineral and organic fertilizers.

The essence of the utility model is illustrated by drawings.

Fig. 1. Scheme of a transport-technological agricultural machine equipped with a device for mounting and driving a mounted attachment, semi-mounted and trailed agricultural equipment.

Fig. 2. Scheme of a transport and technological agricultural machine equipped with a tank.

Fig. 3. Scheme of a transport-technological agricultural machine equipped with a body with folding sides.

The transport and technological agricultural machine (Fig. 1) contains an engine 1 and an all-wheel drive four-wheeled chassis 2 on ultra-low pressure tires 3.

The leading front and rear axles 4 are rigidly (without springs) mounted on the chassis 2.

Torque from the engine 1 to the axles 4 is transmitted through the transfer case 5 using the driveshafts 6.

Chassis 2 is equipped with a driver’s cabin 7 and a device 8 for mounting and driving mounted, semi-mounted and trailed agricultural equipment.

Chassis 2 (Fig. 2) is equipped with a tank 9.

Chassis 2 (Fig. 3) is equipped with a body 10 with hinged sides.

The ratio of the mass of each tire 3 to its conditional volume is 30-80 kg / m.

Due to this ratio, the total stiffness of the wheel with the tire makes it possible to create pressure on the soil from 0.1 to 0.8 kgf / cm by changing the internal air pressure in the tires from 0.06 to 0.5 kgf / cm depending on the type of soil and its bearing capacity.

agricultural work related to tillage (plowing, harrowing, cultivation, etc.), mowing, sowing, watering, fertilizing, the movement of the agricultural machine is not associated with the arrangement of row spacing. In addition, due to the low pressure on the ground, a high coefficient of adhesion of the wheels to the ground and their low rolling resistance is ensured, which significantly increases the traction properties and maneuverability of the agricultural machine, especially on soils with low bearing capacity.

When using agricultural machinery for transport operations on paved roads and dirt roads, the air pressure in the tires can be increased to 0.5 - 0.7 kgf / cm, depending on the condition of the road surface and dirt road.

The agricultural machine can also work with a cargo single- or two-axle trailer on similar ultra-low pressure tires.

A universal transport and technological agricultural machine can be manufactured at any automobile, tractor or agricultural machine building plant using existing technological processes and equipment.

Claims (6)

1. A universal transport and technological agricultural machine containing an engine and four-wheel drive four-wheel chassis on pneumatic tires, characterized in that the ratio of the mass of each tire to its conditional volume, determined by the expression V = 3.14 • B • H (d + H), is 30 -80 kg / m ³ , where V is the nominal volume of the tire, m ² , B is the width of the tire profile, m, N is the height of the tire profile, m, d is the landing diameter of the tire, m 2. The universal transport and technological agricultural machine according to claim 1, characterized in that the internal air pressure in the tires is 0.06-0.7 kgf / cm ² .  3. The universal transport and technological agricultural machine according to claim 1, characterized in that the tires are tubeless.  4. The universal transport and agricultural machine according to claim 1, characterized in that it is equipped with a device for attaching and driving mounted, semi-mounted and trailed agricultural equipment.  5. The universal transport and technological agricultural machine according to claim 1, characterized in that it is equipped with a tank. 6. The universal transport and technological agricultural machine according to claim 1, characterized in that it is equipped with a body with folding sides.