US3747240A - Blade wheel for rotary snow plough - Google Patents

Blade wheel for rotary snow plough Download PDF

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US3747240A
US3747240A US00215893A US3747240DA US3747240A US 3747240 A US3747240 A US 3747240A US 00215893 A US00215893 A US 00215893A US 3747240D A US3747240D A US 3747240DA US 3747240 A US3747240 A US 3747240A
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blades
blade
hub
pivot
extending
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US00215893A
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E Salo
Y Koylio
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    • 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
    • E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/045—Means per se for conveying or discharging the dislodged material, e.g. rotary impellers, discharge chutes

Definitions

  • a blade wheel is positioned within a housing and is formed of a plurality of blades which, depending on the amount of snow directed into the housing, can pivot between an unloaded position and a fully loaded position.
  • the blades are attached to pivot pins mounted in a hub fixed to a rotatable axle.
  • the pivot pins are located radially outwardly from the axle. 1n the unloaded position each blade extends radially outwardly from its pivot pin and the axle.
  • each blade deflects angularly about its pivot pin until it reaches its fully deflected or loaded position. Since the blades can deflect in either direction, the pivot pins of the adjacent blades act as stops for a blade when it reaches its fully loaded position.
  • This invention relates to a blade wheel of the above type, i.e., having blades capable of diplacement in either direction from their radial unloaded position, and is characterized in that each blade is freely rotatably mounted on a hub about its respective pivot pin disposed in the axial direction with respect to the blade wheel axle, the periphery of the hub preferably being formed with limit stops defining the extreme positions of the blades.
  • the novel feature of the invention i.e., that the blades are mounted on the hub freely rotatably in either direction, provides an obvious advantage in that breakages at the attaching end of the blades are avoided even although the blades when desired can be made rigid enough to throw pebbles and lumps far enough from the road.
  • a further advantage provided by the invention is that a blade, which at full load rotation of the blade wheel is swung to either of its extreme positions, receives additional support from the peripheral surface of the hub, or from the limit stops attached to the hub, and thus does not easily break.
  • FIG. 1 is a front elevation view of the blade wheel and FIG. 2 is a side elevation view of the same
  • the blade wheel is intended to be mounted in a conventional housing, not shown, provided with tangential outlets.
  • the hub consists of two flanges 2 and 3 interconnected by means of four pins 4 about which the respective blades 5 are rotatable, or alternatively the pins 4 are attached at the extreme positions 5', where they are supported against the pivot pin of the adjacent blade. If swung in the opposite direction, they will be supported against the inner edges of the vanes and rotatable in their respective apertures provided in the flanges 2 and 3.
  • the blades 5 assume the substantially radial positions indicated by the lines 6.
  • the blade wheel is loaded, in other words,'as a snow jet is passed into the same in substantially axial direction from the right in FIG. 2, and the rotational direction of the axle 1 is that indicated by the arrow in FIG. 1, the blades will swing about the pin 4 in the opposite direction, assuming for example the positions indicated by the .lines 5, the positions being defined by the load. At full load the blades however will swing as far as their pivot pin of the adjacent blade at the opposite side.
  • the hub can have other forms than that shown in the drawing.
  • the hub may consist of a continuous bearing bushing having lugs into which the pivot pins are mounted. If it is desired to limit the rotational angle of the blades so that the blade will not bear against the pivot pin of the adjacent vane, suitable limit stops may be formed in the hub surface between the pivot pins.
  • the forward edges of the blades are provided with transverse plates 7, the object of which is to break snow lumps and similar objects directed toward the blade edges. Adjacent their free edges the blades can in addition be provided with curved additional vanes or troughs, previously known per se, for lifting snow and directing it via the blades into the outlet.
  • Blade wheel for a rotary snow plough for throwing snow from the plough comprising a rotatable axle, a hub fixed to said rotatable axle and extending radially outwardly therefrom, a plurality of blades, pivot means for attaching each of said blades to said hub at positions spaced radially outwardly from said axle and with the pivot axes disposed in parallel relationship with said axle, the pivot attachment positions of said blades to said hub being spaced angularly apart, each of said blades having a leading edge facing in the direction in which snow is fed to said blades and a trailing edge, a flat first blade portion having a pair of oppositely facing surfaces extending outwardly from said hub and extending between said leading and trailing edges, said flat blade portion having a width extending in the axial direction of said axle approximately equal to the axial dimension of said hub and extending parallel to the axis of said pivot means thereof and having a length considerably greater than the distance between adjacent said pivot means, each of said blades is freely rotatable
  • Blade wheel for a rotary snow plough as set forth in claim 1, characterized in that said means secured to the leading edge of said blades comprises a flat second plate portion secured along and extending transversely of the leading edge of said first plate portion, said second plate portion extending outwardly from each of the opposite flat surfaces of said flat first plate portion.
  • Blade wheel for a rotary snow plough as set forth in claim 1, characterized in that said hub has a polygonally shaped configuration in a plane normal to said rotatable axle, said pivot means for said blades comprising a pivot pin for each said blade, each said pin being in claim 3, characterized in that said hub comprises a pair of axially spaced radially extending discs each having a similar polygonally shaped peripheral configuration and each of said pivot pins being secured adjacent its opposite ends into said discs.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

In a rotary snow plough, a blade wheel is positioned within a housing and is formed of a plurality of blades which, depending on the amount of snow directed into the housing, can pivot between an unloaded position and a fully loaded position. The blades are attached to pivot pins mounted in a hub fixed to a rotatable axle. The pivot pins are located radially outwardly from the axle. In the unloaded position each blade extends radially outwardly from its pivot pin and the axle. As a snow load is supplied, each blade deflects angularly about its pivot pin until it reaches its fully deflected or loaded position. Since the blades can deflect in either direction, the pivot pins of the adjacent blades act as stops for a blade when it reaches its fully loaded position.

Description

United States Patent [19] Solo [ BLADE WHEEL FOR ROTARY SNOW PLOUGH Related US. Application Data [63] Continuation of Ser. No. 15,740, March 2, 1970,
abandoned.
[30] Foreign Application Priority Data Mar. 3, 1969 Finland 635 [52] US. Cl. 37/43 B, 302/38, 56/29 [51] Int. Cl E0lh 5/00 [58] Field of Search 37/43 R, 43 A-43 L; 56/29; 302/38; 51/334 [56] References Cited UNITED STATES PATENTS 3,562,933 2/1971 l-lanneman et al..... 37/43 B 3,429,061 2/1969 Haban 37/43 R 2,835,298 5/1958 Collins 56/29 X 714,978 12/1902 Vogt 302/38 3,043,078 7/1962 Witt et al. 56/29 X 2,938,326 5/1960 Lundell 56/29 X 1,846,459 2/1932 Romera 56/29 3,429,060 2/1969 Merry 117/43 R 2,668,487 2/1954 Marihart 37/43 E 11 3,747,240 [451 July 24,1973
Primary ExaminerRobert E. Pulfrey Assistant Examiner-Eugene 1-1. Eickholt Attorney-Toren and McGeady [5 7] ABSTRACT In a rotary snow plough, a blade wheel is positioned within a housing and is formed of a plurality of blades which, depending on the amount of snow directed into the housing, can pivot between an unloaded position and a fully loaded position. The blades are attached to pivot pins mounted in a hub fixed to a rotatable axle. The pivot pins are located radially outwardly from the axle. 1n the unloaded position each blade extends radially outwardly from its pivot pin and the axle. As a snow load is supplied, each blade deflects angularly about its pivot pin until it reaches its fully deflected or loaded position. Since the blades can deflect in either direction, the pivot pins of the adjacent blades act as stops for a blade when it reaches its fully loaded position.
4 Claims, 2 Drawing Figures PATENTEUJULZMBTS INVENTOR Esko Solo 1 BLADE WHEEL FOR ROTARY SNOW PLOUGH This is a continuation of application Ser. No 15,740 filed Mar. 2, 1970 now abandoned.
Since rotary snow ploughs are attached either at the front or the back of the vehicle, depending on the vehicle type, and rotary snow ploughs with fixed blades thus involve the use of a rotary movement in either direction of its blade wheel, it has in recent times become relatively common to use blade wheels with blades consisting of flexible material. Thereby the blades are capable of flexible displacement from their radial unloaded position in either direction depending of the rotational direction, the degree of said displacement being dependent not only on the quality of the blade material but also on the load. It has however been found that flexible blades are not capable of throwing pebbles or hard snow lumps far enough from the road being ploughed. If the blades on the other hand are made of a material of substantial rigidity, it has been found that breakage readily tends to occur at the point of attachment of the blades.
This invention relates to a blade wheel of the above type, i.e., having blades capable of diplacement in either direction from their radial unloaded position, and is characterized in that each blade is freely rotatably mounted on a hub about its respective pivot pin disposed in the axial direction with respect to the blade wheel axle, the periphery of the hub preferably being formed with limit stops defining the extreme positions of the blades.
The novel feature of the invention, i.e., that the blades are mounted on the hub freely rotatably in either direction, provides an obvious advantage in that breakages at the attaching end of the blades are avoided even although the blades when desired can be made rigid enough to throw pebbles and lumps far enough from the road. A further advantage provided by the invention is that a blade, which at full load rotation of the blade wheel is swung to either of its extreme positions, receives additional support from the peripheral surface of the hub, or from the limit stops attached to the hub, and thus does not easily break.
An embodiment of the invention is shown by way of an example in the accompanying drawing, in which FIG. 1 is a front elevation view of the blade wheel and FIG. 2 is a side elevation view of the same The blade wheel is intended to be mounted in a conventional housing, not shown, provided with tangential outlets. I
In the drawing reference No. 1 refers to a blade wheel axle having a hub onto which is fixedly mounted a hub. In the embodiment shown the hub consists of two flanges 2 and 3 interconnected by means of four pins 4 about which the respective blades 5 are rotatable, or alternatively the pins 4 are attached at the extreme positions 5', where they are supported against the pivot pin of the adjacent blade. If swung in the opposite direction, they will be supported against the inner edges of the vanes and rotatable in their respective apertures provided in the flanges 2 and 3.
When the axle rotates, the blades 5 assume the substantially radial positions indicated by the lines 6. As the blade wheel is loaded, in other words,'as a snow jet is passed into the same in substantially axial direction from the right in FIG. 2, and the rotational direction of the axle 1 is that indicated by the arrow in FIG. 1, the blades will swing about the pin 4 in the opposite direction, assuming for example the positions indicated by the .lines 5, the positions being defined by the load. At full load the blades however will swing as far as their pivot pin of the adjacent blade at the opposite side.
It is to be appreciated that the hub can have other forms than that shown in the drawing. Thus the hub may consist of a continuous bearing bushing having lugs into which the pivot pins are mounted. If it is desired to limit the rotational angle of the blades so that the blade will not bear against the pivot pin of the adjacent vane, suitable limit stops may be formed in the hub surface between the pivot pins.
The forward edges of the blades are provided with transverse plates 7, the object of which is to break snow lumps and similar objects directed toward the blade edges. Adjacent their free edges the blades can in addition be provided with curved additional vanes or troughs, previously known per se, for lifting snow and directing it via the blades into the outlet.
I claim:
1. Blade wheel for a rotary snow plough for throwing snow from the plough, comprising a rotatable axle, a hub fixed to said rotatable axle and extending radially outwardly therefrom, a plurality of blades, pivot means for attaching each of said blades to said hub at positions spaced radially outwardly from said axle and with the pivot axes disposed in parallel relationship with said axle, the pivot attachment positions of said blades to said hub being spaced angularly apart, each of said blades having a leading edge facing in the direction in which snow is fed to said blades and a trailing edge, a flat first blade portion having a pair of oppositely facing surfaces extending outwardly from said hub and extending between said leading and trailing edges, said flat blade portion having a width extending in the axial direction of said axle approximately equal to the axial dimension of said hub and extending parallel to the axis of said pivot means thereof and having a length considerably greater than the distance between adjacent said pivot means, each of said blades is freely rotatable in both directions about its pivot attachment position and is pivotally displaceable due to its pivotal attachment to said hub between an unloaded position in which it extends radially outwardly from said hub to a loaded position when snow is directed against one of the surfaces of said flat first blade portions so that said blade pivots about its pivotal attachment to said hub out of the radially outwardly extending position toward said pivot means at the pivot attachment position of the adjacent said blade in the opposite direction to which said blade is rotating so that when supported by the adjacent said pivot means said blade is in its fully angularly deflected position, and means secured to the leading edge of said blades for breaking snow lumps and the like directed toward the leading edge.
2. Blade wheel for a rotary snow plough, as set forth in claim 1, characterized in that said means secured to the leading edge of said blades comprises a flat second plate portion secured along and extending transversely of the leading edge of said first plate portion, said second plate portion extending outwardly from each of the opposite flat surfaces of said flat first plate portion.
3. Blade wheel for a rotary snow plough, as set forth in claim 1, characterized in that said hub has a polygonally shaped configuration in a plane normal to said rotatable axle, said pivot means for said blades comprising a pivot pin for each said blade, each said pin being in claim 3, characterized in that said hub comprises a pair of axially spaced radially extending discs each having a similar polygonally shaped peripheral configuration and each of said pivot pins being secured adjacent its opposite ends into said discs.

Claims (4)

1. Blade wheel for a rotary snow plough for throwing snow from the plough, comprising a rotatable axle, a hub fixed to said rotatable axle and extending radially outwardly therefrom, a plurality of blades, pivot means for attaching each of said blades to said hub at positions spaced radially outwardly from said axle and with the pivot axes disposed in parallel relationship with said axle, the pivot attachment positions of said blades to said hub being spaced angularly apart, each of said blades having a leading edge facing in the direction in which snow is fed to said blades and a trailing edge, a flat first blade portion having a pair of oppositely facing surfaces extending outwardly from said hub and extending between said leading and trailing edges, said flat blade portion having a width extending in the axial direction of said axle approximately equal to the axial dimension of said hub and extending parallel to the axis of said pivot means thereof and having a length considerably greater than the distance between adjacent said pivot means, each of said blades is freely rotatable in both directions about its pivot attachment position and is pivotally displaceable due to its pivotal attachment to said hub between an unloaded position in which it extends radially outwardly from said hub to a loaded position when snow is directed against one of the surfaces of said flat first blade portions so that said blade pivots about its pivotal attachment to said hub out of the radially outwardly extending position toward said pivot means at the pivot attachment position of the adjacent said blade in the opposite direction to which said blade is rotating so that when supported by the adjacent said pivot means said blade is in its fully angularly deflected position, and means secured to the leading edge of said blades for breaking snow lumps and the like directed toward the leading eDge.
2. Blade wheel for a rotary snow plough, as set forth in claim 1, characterized in that said means secured to the leading edge of said blades comprises a flat second plate portion secured along and extending transversely of the leading edge of said first plate portion, said second plate portion extending outwardly from each of the opposite flat surfaces of said flat first plate portion.
3. Blade wheel for a rotary snow plough, as set forth in claim 1, characterized in that said hub has a polygonally shaped configuration in a plane normal to said rotatable axle, said pivot means for said blades comprising a pivot pin for each said blade, each said pin being supported in and located adjacent the periphery of said hub, and each said pin being located in a plane extending radially outwardly from the center line of said axle and passing through the intersection of a pair of the peripheral sides of said hub.
4. Blade wheel for a rotary snow plough, as set forth in claim 3, characterized in that said hub comprises a pair of axially spaced radially extending discs each having a similar polygonally shaped peripheral configuration and each of said pivot pins being secured adjacent its opposite ends into said discs.
US00215893A 1969-03-03 1972-01-06 Blade wheel for rotary snow plough Expired - Lifetime US3747240A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4908968A (en) * 1988-04-15 1990-03-20 The Toro Company Snowthrower with resilient impeller

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE795974A (en) * 1972-03-06 1973-06-18 Ducker Josef PAVEMENT EDGE CLEANING MACHINE
FR2523168A1 (en) * 1982-03-11 1983-09-16 Letondor Roger Snow plough attachment for excavator - comprises rotating shaft carrying pivoting shovels which discharge into turbine

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US714978A (en) * 1902-09-02 1902-12-02 John Vogt Grain-conveyer.
US1846459A (en) * 1930-06-14 1932-02-23 Emilio Guiriato Combination agricultural implement
US2668487A (en) * 1950-06-02 1954-02-09 M P H Ind Agricultural machine and hoeing device therefor
GB720686A (en) * 1952-02-20 1954-12-22 Louis Grisel Machine for the removal of a ground surface layer
CH322914A (en) * 1954-01-12 1957-07-15 Paul Von Arx & Co Ag Street cleaning machine.
US2835298A (en) * 1955-10-28 1958-05-20 Massey Harris Ferguson Inc Rotary cutting mechanism
US2911737A (en) * 1954-01-12 1959-11-10 P Von Arx & Co A G Street-cleaning machine
US2938326A (en) * 1956-05-18 1960-05-31 Vernon J Lundell Hay chopper
US3043078A (en) * 1959-09-30 1962-07-10 Int Harvester Co Forage harvester knife structure
US3128729A (en) * 1960-05-24 1964-04-14 James A Henson All-purpose farm machine
US3429061A (en) * 1966-02-01 1969-02-25 Joseph Haban Snow throwers
US3429060A (en) * 1965-08-27 1969-02-25 Clayton B Merry Snow removal apparatus
US3562933A (en) * 1968-10-04 1971-02-16 Elvin E Hanneman Rotary snow removing machine

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US714978A (en) * 1902-09-02 1902-12-02 John Vogt Grain-conveyer.
US1846459A (en) * 1930-06-14 1932-02-23 Emilio Guiriato Combination agricultural implement
US2668487A (en) * 1950-06-02 1954-02-09 M P H Ind Agricultural machine and hoeing device therefor
GB720686A (en) * 1952-02-20 1954-12-22 Louis Grisel Machine for the removal of a ground surface layer
US2911737A (en) * 1954-01-12 1959-11-10 P Von Arx & Co A G Street-cleaning machine
CH322914A (en) * 1954-01-12 1957-07-15 Paul Von Arx & Co Ag Street cleaning machine.
US2835298A (en) * 1955-10-28 1958-05-20 Massey Harris Ferguson Inc Rotary cutting mechanism
US2938326A (en) * 1956-05-18 1960-05-31 Vernon J Lundell Hay chopper
US3043078A (en) * 1959-09-30 1962-07-10 Int Harvester Co Forage harvester knife structure
US3128729A (en) * 1960-05-24 1964-04-14 James A Henson All-purpose farm machine
US3429060A (en) * 1965-08-27 1969-02-25 Clayton B Merry Snow removal apparatus
US3429061A (en) * 1966-02-01 1969-02-25 Joseph Haban Snow throwers
US3562933A (en) * 1968-10-04 1971-02-16 Elvin E Hanneman Rotary snow removing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4908968A (en) * 1988-04-15 1990-03-20 The Toro Company Snowthrower with resilient impeller

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NO133767B (en) 1976-03-15
SE357787B (en) 1973-07-09
AT300886B (en) 1972-08-10
CH517867A (en) 1972-01-15
DE2008546A1 (en) 1970-10-15

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