CS243926B1 - Gantry tractor - Google Patents

Abstract

The invention relates to a portal tractor, which consists of a straddle portal, which is mounted in the rear part on the differential housing of the original power unit of a tractor of a unified series. The straddle portal is composed of internal and external hollow beams, in which are placed rephasic gears ensuring the transmission of torque from the drive shaft of the differential housing to the wheel details mounted in the lower part of the external hollow beams.

Description

243926

The present invention relates to a gantry tractor, in particular for cultivation of soil and treatment of wood in orchards, vineyards and other nurseries.

For comprehensive work in orchards, vineyards and nurseries, as. popping, plowing out, chemical treatment and plant fertilization. The machines are used in large-scale universal machines, which do not allow the execution of school-school, orchard or wine-making machines. These are mainly on tracked small-tractors and some others universally equipped. In particular, in the case of higher stands of fruit and ornamental trees, their maneuverability is interrupted, which is reflected also in the quality of the work performed.

Several types of special machines have been developed to improve the performance of these machines, but their parameters do not always match the requirements imposed on them. The most common structural component of these machines is the support platform on which the entire power system and the machine room are located, which is open or covered by the safety cabin. Four wheel drive wheels, of which the driving, similar to the drive wheels, connected to the carrier platform, are driven either by hydraulic motors or mechanically grooved extendable shaft. directly from the power unit. The main disadvantage of machines with the mentioned structural elements is the low ground clearance, which does not allow treatment of higher wood stands, especially in fruit and ornamental orchards. Some types do not have the option of adjusting the working width of the traveling wheels, thus reducing their usability in beds. span width. The machine operator located high above the chunk loses the possibility of a perfect visual control by the over-performance of the aggregate tool. Considering that the center of gravity of the machine is relatively high, it is not possible to deploy it in dark terrains as far as the o-sets are concerned and vineyards. A special device for carrying out the washing machine is a machine whose power system and power point is located on a one-track tandem chassis, while the front co-forest is both driving and controllable. Supporting the field stability is supported by support wheels on both sides of the platform, which are connected to the support platform by special gantries. Each portal creates a passage for yvsideredwood. The clear height of the portal is adjustable up to 3,000 mm. The disadvantage of the described device is the high center of gravity of the machine, and especially the control of the cultivation work. or other aggregated tools. Its high-centered, non-typical design does not allow it to be used in a sloping slope.

The aforementioned drawbacks are eliminated by the device according to the invention, which at least one inner hollow girder is fixed to the differential housing, connected to each side by at least two anti-friction guiding pins and double-acting linear hydraulic motors with an outer girder; The two wheel details are connected to the differential drive shaft, advantageously via chain gears located in the inner cavity and in both outer hollow beams connected by extendable grooved shafts on which fixed service brakes, preferred co-brakes. The advantage of the gantry tractor is the high availability of unified parts, especially UR-I and UR-II tractors. With its passage height, it allows to treat plant growths and ornamental trees up to a height of 2,500 mm. Almost all of the cultivation tools of the chemical dispensers can be aggregated behind the tractor. Aggregated with the cultivation tool allows for the production of 3 intermediate lines at a time and treatment of 2 fruit or ornamental tree species. An exemplary embodiment of a gantry tractor according to the present invention is shown in the accompanying drawing, in which Fig. 1 is a perspective view of the portal tractor, and Fig. 2 is a front view of the device.

Two inner duo-beams 2 are fastened to the differential housing 1 of the water-saving part 10 of the tractor Zetor of the unified row I, the floods of the openings to the forest detail 4 being blinded by the covers 11. fixed axle axle 12 controlled hydraulically. The two inner hollow beams 2 are joined at the top of the yard above the stacked two-sided. the reinforcement of the structure, the front portions of the two outer hollow beams 3 are inserted on a double-sided guide pin 8 which is via two support beams. 13 fixed to the motor bracket 14 of the power section 10.

The outer hollow beams 3 and the inner dome beams 2 interconnected by double-sided pins 8 form a straddling portal whose width is adjustable by linear hydromotors 15. Torque transmission from the drive shaft 5 of the differential housing 1 the wheel details 4 fixed in the bottom of the external hollow beams 3 secured by the chain gears 6 which are located inside the outer hollow beams 3 and inside the internal hollow beams. 2, wherein they are connected by groove-like shafts 7. Braking of the circumferential details 4 provides! circular service brakes 9 mounted on the groove

Claims (2)

243926 With 6-way pull-out shafts 7 from the outside of the two outer hollow beams 3. The tensioning of the chain gears 6 is provided by eccentrically mounted pinion gears 16 in both outer hollow beams 3 as well as in the two inner hollow beams 2 V. the space between the support beams 13a and the inner hollow beams 2 is provided with a place for the operator 18 which is protected from the side slopes by side barriers19. Hinges 20 are mounted at the rear of the straddle portal, the interior of which is mounted on the differential housing 1, and the laterals are mounted on the outer stiffeners 3. The two outer hollow beams can be moved 200 mm on both sides of the guide pins 8, thereby the total width of the straddle portal is increased by 400 millimeters. SUBJECTS Gantry tractor, especially for interdisciplinary cultivation of soil and plantation in orchards and nurseries, the e-mineral part of which consists of a motor, a transmission and a support frame of a unified series, on which an anxiety anchor is fixed in the front. a controllable baffle, characterized in that at least one inner cavity (2j) is attached to the differential housing (1) via at least two double-sided guide pins (8) and double-acting linear-EMERGENCY hydraulic motors (10) with an outer hollow carrier ( 3) in the lower part with the complete wheel detail (4), the two wheel details (4j being connected by the drive shaft (5) through the chain gears (6) located in the inner hollow beam (2) and the two outer hollow beams (3j) , connected by means of extendable groove shafts (7) on which the service brakes (9) are mounted, advantageously écúcové. 2 sheets of drawings