Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
  • E01H10/00—Improving gripping of ice-bound or other slippery traffic surfaces, e.g. using gritting or thawing materials ; Roadside storage of gritting or solid thawing materials; Permanently installed devices for applying gritting or thawing materials; Mobile apparatus specially adapted for treating wintry roads by applying liquid, semi-liquid or granular materials
  • E01H10/007—Mobile apparatus specially adapted for preparing or applying liquid or semi-liquid thawing material or spreading granular material on wintry roads

Definitions

• the present invention relates to a method for spreading road salt, in conjunction with which the salt is moistened prior to spreading with water according to an adjustable mixing ratio-
• the invention also relates to an arrangement for spreading road salt comprising a salt reservoir, a water reservoir, devices for transferring salt and water from the aforementioned reservoirs to a mixing station in which the salt is moistened with water in an adjustable mixing ratio, and devices so arranged as to transport the moistened salt to a spreader.
• a spreading arrangement of this kind for road salt, in which the salt is moistened in conjunction with spreading, is previously disclosed through CH A 400 337.
• Preventive salting involves spreading the salt conventionally, either dry or moistened with a salt solution or water. There is an associated risk of a large proportion of the salt being displaced by the traffic before it has had an opportunity to enter into solution. Salt is also spread in the form of a saturated salt solution containing approximately 20% of salt. The salt solution is effective and adheres well to the road surface, although it suffers from major disadvantages. It cannot be used during frost or precipitation because of the large proportion of water present in the solution, and it calls for major investments in salt solution plant and special spreader equipment.
• the object of the present invention is to eliminate the aforementioned disadvantages. This is achieved by the method in accordance with the invention in that the salt moistened with water is dispersed before spreading takes place.
• an arrangement for executing this method is characterized in that the aforementioned transport device comprises a means for the fine dispersion of the moistened salt.
• the aforementioned transport device comprises a hopper arranged above the spreader
• an advantageous embodiment is achieved in that the arrangement comprises a grinder, capable of being pivoted about a vertical shaft between a neutral position and a working position, driven by an hydraulic motor supplied with energy from the hydraulic system of a transport vehicle, which grinder is situated inside the effective area of the hopper in the working position, and outside it in the neutral position.
• the grinder consists of a bowl-shaped body with a central raised part, such that the bottom of the body forms a ring-shaped, circular, flat grinding path, and that a shaft runs across it through the raised part and is mounted in it so that it is free to rotate, which shaft is operatively connected to at least one grinding body in the form of a truncated cone so arranged as to run around the grinding path, whereby a particularly robust and efficiently operating embodiment of the grinder is achieved.
• the designation 1 is used in the drawing schematically in respect of a salt reservoir, and the designation 2 in respect of a water reservoir.
• the designations 3 and 4 are used in respect of devices for transporting salt and water to a mixing station 5.
• the salt is moistened with water in an adjustable mixing ratio.
• Further transport devices 6 are arranged to transport the moistened salt to a spreader 7.
• the mixing station 5 and the aforementioned transport devices 3, 4 and 6 may consist of a gravity shaft, for example, with a sprinkler system arranged therein connected to a water reservoir 2 via a pipe.
• the quantity of water supplied is controlled, for example, by means of a tap of a conventional type.
• the spreader 7 is a so-called disc spreader consisting of a spreader disc 7c arranged at the narrow end of the hopper 7a and driven by an hydraulic motor 7b.
• means 8 for finely dispersing the moistened salt are provided in front of the spreader 7.
• the aforementioned means 8 consist of a grinder 8a so arranged as to be driven by an hydraulic motor 8b.
• the grinder 8a and the motor 8b are so arranged on a vertical shaft 9 as to pivot from a neutral position marked with solid lines to a working position marked with broken lines, in which the grinder 8a is situated inside the effective area of the hopper 7a.
• the grinder 8a is situated outside this area in the neutral position.
• the grinder in the illustrated embodiment comprises a bowl- shaped body 10 with a centrally raised part 10a and a partially open cover 10b.
• the bottom 10c of the body forms a ring-shaped, circular, flat grinding path.
• Running through the raised part 10a and mounted in it is a shaft, not visible in the drawing, which connects the motor 8b to a cone-shaped part 11, which supports two grinding bodies 11a, lib in the form of a truncated cone and so arranged as to run around the grinding path 10c.
• Moistened salt falls down onto the grinding path 10c in the working position and is dispersed by the grinding bodies 11a, lib, whereupon the dispersed, moistened salt, which now has the consistency of gruel, is allowed to drop onto the spreader disc 7c and is spread out onto the carriageway.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Accessories For Mixers (AREA)
• Road Paving Machines (AREA)
• Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
• Seasonings (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=20389940

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Family Cites Families (3)

• 1993
  • 1993-05-14 SE SE9301660A patent/SE501330C2/sv unknown
• 1994
  • 1994-05-11 WO PCT/SE1994/000437 patent/WO1994026979A1/en not_active Application Discontinuation
  • 1994-05-11 EP EP94916453A patent/EP0698150A1/en not_active Withdrawn
• 1995
  • 1995-11-10 NO NO954534A patent/NO305869B1/no not_active IP Right Cessation

Non-Patent Citations (1)

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