RU2764929C1 - All-terrain vehicle tire - Google Patents

Abstract

FIELD: agricultural engineering.

SUBSTANCE: invention relates to vehicles, as well as to agricultural machinery. The inner and outer discs are installed in the side surfaces of the automobile tire. The discs are connected to each other by jumpers evenly distributed around the perimeter of the tire tread. Ground hooks located in the grooves of the tire tread are installed on the jumpers. Under full load of the car and the recommended tire air pressure, the ground hooks are located in the grooves of the tire tread and do not go beyond it and do not contact the roadbed. The maximum pressure of the car on the tire is in the area of contact of the tire with the roadbed. When air pressure in the tires decreases, the area of contact of the tire with the roadbed increases, and therefore the friction force increases and creates a large contact area between the tire and the roadbed, while the ground hooks extend beyond the surface of the tire tread and when the wheel rotates, they alternately contact the roadbed.

EFFECT: increase in the cross-country ability of vehicles.

4 cl, 6 dwg

Description

The invention "Automobile off-road tire" relates to the main equipment and is intended to increase the cross-country ability of vehicles and agricultural machinery.

Numerous devices are known for improving the vehicle's patency, for example: traction control chains, traction control devices called lugs, rubber chains, "4WD" anti-skid bracelets, Tplus and Nordis. etc.

However, some of these devices are ineffective on a road covered with mud or snow (studs and their analogues), others are characterized by a small area of contact with the road, and therefore are ineffective, while almost all of these devices have a common drawback, the installation of these devices is impossible in stop situations car: on a slippery, icy and snowy road, on an uphill slope, in pits, i.e. in situations where traction control is absolutely necessary.

A device is known for increasing the passability of a car RU 2510336 C1 containing two or more anti-skid bodies for placing them in a car tire and installing them around the entire circumference of the tire with the ability to connect to each other, while each of the anti-skid bodies has a U-shaped section and contains a U- figurative elements from the front and back sides.

The main disadvantage of the device is that this device, due to the small area of the wheel on the ground and its greater shift, form a deep track that prevents the movement of the car.

Closest to the claimed invention "Automobile off-road tire" is "Device for increasing vehicle cross-country ability" RU 2612744 C1, selected as a prototype, mounted on the side of a vehicle wheel, containing a disk with double bushings welded on it around the circumference, a tire and profile reinforcement, increasing the cross-country ability and smoothness of the vehicle movement is achieved by movable blades mounted on the axes of the twin bushings and coupled with elastic elements located between the profile reinforcement, while the rotation of the movable blades changes the area of support on the ground, which is equal in size to the distance between the axes of the twin bushings.

The disadvantage of this "Device for improving the car's cross-country ability" is the complexity of the design, time-consuming installation and dismantling of the device, in addition, when installing this device, drilling of a regular wheel rim and welding on it around the circumference of double bushings is required, and it cannot be installed on the driving front wheels of the car, since the possibility of damage to the wings of the car when turning the front drive wheels is not ruled out.

The aim of the invention is to eliminate all of the above disadvantages.

SOLUTION

The essence of the invention is illustrated by drawings.

In FIG. 1 shows the wheel, viewed from the inside, in Fig. 2 front view of the wheel, in Fig. 3 is a view from the outside when the lugs do not go beyond the tire tread of the wheel and do not come into contact with the roadbed.

In the car tire, in its side surfaces, discs are installed - inner disc 1 and outer disc 2, discs 1 and 2 are interconnected, evenly distributed along the perimeter of the tire tread by jumpers 3, on jumpers 3 there are lugs 4 located in the grooves of the tire tread, moreover, at a full load of the car and the recommended tire pressure, the lugs 4 are in the grooves of the tire tread and do not go beyond it and do not contact the roadbed. The maximum pressure of the car on the tire occurs in the area of contact of the tire with the roadbed, in difficult road conditions, the air pressure in the tires decreases, the area of contact of the tire with the roadbed increases, and consequently, the friction force increases, while the lugs 4 go beyond the surface of the tire tread, and when the wheel rotates, the lugs 4 alternately contact the roadbed.

Discs 1 and 2, jumpers 3 with grousers 4, can be made of carbon steel, followed by electroplating, alloyed stainless steel, alloys with increased abrasion resistance, and also from elastic synthetic material (for example, polypropylene).

Vehicle tire pressure indicators require constant monitoring. Optimum tire pressure brings fuel savings, increases tire life, and most importantly, creates the conditions for safe driving vehicles.

The deviation of tire pressure from the norm in one direction or another leads to uneven wear of the tire tread. Low tire pressure causes them to overheat, which accelerates tire wear, causing poor grip on the road surface. Equally dangerous are tires with a pressure much higher than normal, the contact area with the road decreases, and the central part of the tread is subjected to a large load. In both cases, the stability of the car decreases while driving, driving is seriously deteriorating, and the braking distance increases, which creates a serious risk of an accident.

To improve the efficiency of the car on various road surfaces, a centralized tire inflation system CTIS has been developed, it allows you to control the air pressure in each tire. Another function of CTIS is to maintain tire pressure in the event of a puncture.

There are two main manufacturers of the CTIS system: the American corporation Dana and the French Syegon.

Dana Corporation releases two versions of CTIS, PSI for military use and TPCS for commercial use.

HVMMER military vehicles are equipped with a wheel inflation system, this is done to improve the vehicle's patency, on bad roads and in bad weather conditions.

The principle of the CTIS device.

The CTIS receives air for operation from the same compressor as the brake system, a pressure switch ensures that air will not enter the CTIS until the brake system is filled. A valve is located on each wheel, which allows you to isolate the wheel from the system and act on it only if necessary. Electronic control unit ECU, sends commands to the pneumatic control unit, which controls the valve and pressure in the system, and transmits tire pressure readings to the control panel, the driver monitors the status of the system, and also regulates tire pressure.

If the vehicle is driving on the highway, the tire pressure must be higher, which is why CTIS includes speed sensors. The CTIS system automatically raises and lowers air pressure in the wheels depending on the speed of movement.

Goodyear has developed the Air Maintenance System, a self-inflating tire technology that does not require additional electronics or an external pump. The miniature pump and all other parts of the system are located directly in the tire itself. And the work is based on the principle of operation of communicating vessels.

In FIG. 4 shows the wheel, viewed from the inside, in Fig. 5 is a front view of the wheel, and FIG. 6 is a view from the outside when the lugs are out of the tire tread and in contact with the roadbed.

Automotive off-road tire works as follows. If the car is on a hill, in a pit, on a slippery, icy or snowy road, and the car's wheels start to slip, the centralized tire control system automatically lowers the pressure in the tires of the wheels, and since the car's maximum pressure on the tire falls in the contact area tires with the roadbed, then when the tire pressure decreases, a large contact area is created between the tire and the roadbed, and the lugs 4 go beyond the surface of the tire tread and, when the wheel rotates, alternately contact the roadbed, and the car continues to move.

After passing a difficult section of the road and entering the car on the track, the centralized tire inflation system automatically increases the air pressure in the tires of the wheels, the tire straightens out and the lugs 4 enter the tire tread and do not contact the roadbed.

INDUSTRIAL APPLICABILITY

The proposed invention "Road cross-country tire" can significantly increase the cross-country ability of almost any vehicle and agricultural machinery, by increasing the area of contact of the tire with the roadbed, and the lugs going beyond the tire tread surface, while the lugs cut into the roadbed, preventing wheel slip.

When traveling by car at any time of the year, to hard-to-reach regions of the country, in difficult road conditions: on country roads, off-road, rough and swampy terrain, as well as when driving on icy roads, rolled and loose snow, in areas of the Far North, transport vehicles must be equipped with off-road tires, especially for special-purpose vehicles, such as the Ministry of Emergency Situations, Sanitary Assistance, army vehicles, and agricultural vehicles.

A big advantage of an all-terrain vehicle tire is that the driver does not leave the cab to overcome a difficult section of the road, this increases driver comfort, reduces travel time, and there is no need to switch to winter tires, which significantly saves time and money. when servicing vehicles.

List of documents

1. Catalog. Anti-skid bracelets Nordis.

2. RF patent for the invention RU 2510336 C1 "Anti-skid device for tires".

3. Russian Federation patent for the invention RU 2612744 C1 "Device for increasing the cross-country ability of a car."

Claims (4)

1. A cross-country vehicle tire, characterized in that discs are installed in the side surfaces of the tire - inner and outer, the discs are connected to each other by jumpers evenly distributed around the perimeter of the tire projector, lugs are installed on the jumpers located in the grooves of the tire tread, with a full load of the car and the recommended air pressure in the tires, the lugs are in the grooves of the tire tread and do not go beyond it and do not contact the roadbed, in difficult road conditions, the air pressure in the tires decreases, and since the maximum pressure of the car on the tire falls in the area of contact of the tire with the roadbed , then the area of contact of the tire with the roadbed increases, and consequently the friction force increases, while the lugs go beyond the surface of the tire tread and when the wheel rotates, the lugs alternately contact the roadbed. 2. The device according to claim 1, characterized in that the off-road vehicle tire is equipped with a sensor for monitoring the position of the lug relative to the tire tread surface. 3. The device according to claim. 1, characterized in that the off-road vehicle tire is equipped with a system for pumping and deflation of air in the tires of the wheels, depending on the speed, road and weather conditions. 4. The device according to claim. 1, characterized in that the off-road vehicle tire is equipped with a system for pumping and deflation of air in the tires of the wheels in manual mode, from the control panel from the cab of the car.

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