Classifications

• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
  • A01B73/00—Means or arrangements to facilitate transportation of agricultural machines or implements, e.g. folding frames to reduce overall width
  • A01B73/02—Folding frames

Definitions

• Transportdevice for a sectioned implement Transportdevice for a sectioned implement.
• the present invention relates to an arrangement for converting a tractor-drawn roller for compacting ground in agriculture from its working position to a position more suitable for rapid transportation on roads, and for reconverting said roller to the working position.
• the figures required for describing the invention are
• Fig. 1 which shows a previously known roller provided with a converting arrangement for rapid transportation on roads;
• FIG. 2 which shows a previously known roller without corresponding converting arrangement
• FIG. 3 which shows a roller provided with a converting arrangement according to the invention in the working position
• FIG. 4 which shows the same roller as in Fig. 3 in the transport position.
• both rollers with converting arrangements for transport and rollers entirely without any such arrangement have been known previously.
• the roller is subdivided into three or several roller sections movable in relation to one another. This is so, on the one hand, in order to impart to the roller while it is at work a high degree of adaptability to the ground, while, on the other hand, enabling it to be folded up to a certain extent for transportation on roads.
• An example of such a roller is shown in Fig. 1, where the three roller sections (2) are mounted within a framework, the outer ends (3) of which can be folded upward by means of hydraulic cylinder (4) and hinges (5) so as to considerably reduce the overall width of the roller.
• rollers with converting arrangement it is generally the case that the conversion takes place in two stages, i. e. a first stage in which the roller is raised, with the aid of hydraulic power from the tractor, on wheels specially intended for transportation (in the example 6). And another stage consists in reducing the overall width of the roller by moving the outer ends of the outer roller sections upward, to the rear or forward, in the direction towards the vertical centre plane of the implement, using to this end hydraulic power from the tractor, the tractive force of the tractor, a cable winch etc.
• roller sections 2 consist of a number of cast-iron rings (8) mounted on a shaft so as to form a heavy roller rolling on the ground.
• a roller without converting arrangement for transport, Fig. 2 is therefore a technically speaking very simple implement, as a result of which the investment required for designing just the converting arrangement, where such an arrangement exists, is high by comparison with that for the roller itself.
• the commercial consequence thereof is that only relatively large and costly rollers can be equipped with such an arrangement, which is, in practice, very advantageous.
• the main purpose of the present invention is to provide an extremely simple and low-priced converting arrangement enabling rapid and smooth road transportation of preferably relatively small rollers, of which there is a very clear nominal majority in the market.
• Characteristic for the invention is the fact that both the operations of reducing the overall width of the roller and raising it on transport wheels take place at one and the same instant, inasmuch as the wheels are secured at such points of the roller that they are pressed down towards the ground and raise the roller when the outer ends of the roller sections are moved towards the vertical centre plane of the roller.
• roller Fig. 3
• the invention is described in greater detail with reference to an embodiment in which the roller, Fig. 3, is subdivided into two roller sections (2), each of which is secured within its respective frame part (9).
• the two frame parts are then flexibly joined with one another by mounting on a joint tor ⁇ ional shaft (10) consisting of a round tube which also acts as a drawbar leading to the tractor.
• the converting arrangement itself is limited to a wheel (11) secured in the outer edge of each frame part, said wheel being, in the working position of the roller, inclined towards the level of the ground and substantially beyond the outer edge of the roller section, with a certain clearance above the surface of the ground, and to a thrusting hydraulic cylinder (12) so arranged as to press the outer ends of the roller sections downward and inward towards the centre.
• the wheels of the roller described can be folded manually upward and inward, while the roller stands in its working position. This has the purpose of avoiding collision with solid obstacles.
• the arrangement described can, of course, be varied within the scope of the patent claims. Without departing from the inventive idea, it is, for instance, possible to make the wheel mountings in the example pivotable, whereby stationary conversion is enabled inasmuch as during the conversion stage the wheels assume positions transverse to the direction of driving. The distortion towards the ground, transversely to the direction of driving, undergone in that case by the outermost cast-iron rings, does not, in most practical cases, constitute any decisive disadvantage.
• Another alternative embodiment of the invention is achieved by arranging the wheel substantially within the inner edges of the roller sections, while replacing the thrusting hydraulic cylinder by a traction cylinder, whereby the outer ends of the roller sections pivot upward and assume the form of a V (seen from the rear) when the implement is converted to the transport position.
• a roller provided with an arrangement according to the invention can be coupled with the standard so-called three-point linkage of the tractor, whereby the connection between the roller and the tractor becomes so rigid that only one transport wheel is required (the tractor balancing the roller in the transport position). In such a case it is most advisable to subdivide the roller into two roller sections and to pivot only the outer end of one of the sections upward so as to form an L (seen from the rear) when the implement is converted to the transport position.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Soil Sciences (AREA)
• Environmental Sciences (AREA)
• Agricultural Machines (AREA)
• Soil Working Implements (AREA)
• Road Paving Machines (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20374782

Family Applications (1)

Country Status (5)

Cited By (5)

Families Citing this family (1)

Citations (3)

• 1989
  • 1989-01-18 SE SE8900159A patent/SE466328B/sv not_active IP Right Cessation
• 1990
  • 1990-01-12 EP EP19900901925 patent/EP0456657B1/en not_active Expired - Lifetime
  • 1990-01-12 WO PCT/SE1990/000022 patent/WO1990007867A1/en active IP Right Grant
  • 1990-01-12 DE DE69007615T patent/DE69007615T2/de not_active Expired - Fee Related
• 1991
  • 1991-07-15 FI FI913397A patent/FI913397A0/fi not_active Application Discontinuation

Patent Citations (3)

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