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
  • 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
  • E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
  • E01H5/065—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades characterised by the form of the snow-plough blade, e.g. flexible, or by snow-plough blade accessories
  • E01H5/066—Snow-plough blade accessories, e.g. deflector plates, skid shoes
• • 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
  • E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
• • 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
  • E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
  • E01H5/063—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades by snow-plough blades tiltable for shock-absorbing purposes

Definitions

• the present invention relates to a vehicle-mounted scraper implement for snow clearing, grading or the like, said implement comprising a blade which is mounted on a frame and which, at an upper portion, is hingedly con ⁇ nected to a holder at a point, or about a pivot axis, si ⁇ tuated in front of a lower cutting edge of the blade.
• SE Patent Application 8801790-0 discloses an imple ⁇ ment of this type.
• the basic idea of this construction is that the blade should, at its upper portion, be hingedly mounted at a point in front of the lower blade edge so as to swing backwards and upwards when striking an obstacle and thus make it easier to pass the obstacle without any damage to the blade.
• the blade When working under normal load, how ⁇ ever, the blade should be kept in a distinct position, and to this end there are provided two spring means, the tension of which must be overcome to make the blade swing backwards.
• these spring means must serve many different functions and be adjustable in dif ⁇ ferent ways, such that the implement may be used for every conceivable task.
• the spring means must be able to define the forwardly directed movements of the blade to a distinct, front end or working position which, moreover, should be adjustable in order to impart to the blade dif ⁇ ferent angles of engagement relative to the ground, or in order to suit different blade types. Also, the spring pressure urging the blade forward should be adjustable for work on different grounds, and the spring means must be designed to withstand the forwardly directed forces aris ⁇ ing if the vehicle reverses with the implement resting on the ground.
• the object of the present invention is to eliminate the inconveniences described above and provide a simple and inexpensive implement of the type described by way of introduction.
• a setting mechanism is connected to the " holder, one or more flexible means, such- as wires, extending from the setting mechanism and being connected to the lower portion of the blade and adapted to define a front end or working position towards which a spring means constantly strives to bring the blade, and from which the blade, if it should strike an obstacle, is freely movable backwards and up- wards owing to a slackening of said flexible means, the front end position of the blade being adjustable by means of said setting mechanism and said flexible means so as to vary the inclination of the blade in relation to the hori ⁇ zontal plane.
• FIG. 1 is a rear view of the front part of the implement according tcr the invention
• FIG. 2 is a side view of said implement
• FIG. 3 is a perspective view of the mounting of the run ⁇ ner on the holder
• FIG. 4 is a side view of the mounting mechanism of the runner
• FIG. 5 is a side view of the rear part of the implement.
• the implement shown in the drawings comprises a blade 1 which, in the embodiment illustrated, is particularly adapted for snow clearing and therefore shows a pronounced curvature and has a lower cutting edge 2.
• the blade is fixed to a holder 3 which, via a substantially vertical joint 4, is connected to a substantially horizontal sup ⁇ porting shaft 5 which is turnable in relation to a frame carrying the implement, said frame comprising a front part 6 and a rear part 7.
• the implement is intended to be mounted on a vehicle, in this case a loader, and the rear part 7 therefore has a conventional implement attachment 8 for the connection to the lifting arms of the loader.
• Two hydraulic cylinders 9', 9" are disposed between the blade and the supporting shaft, one on each side of the latter, for moving the blade about the vertical joint 4.
• the hol ⁇ der 3 comprises a beam 10 and a bracket 11 rigidly con ⁇ nected thereto and having a supporting plate 12 loosely underpropping the supporting shaft, such that the sup ⁇ porting plate, and thus also the beam and the blade, can be freely turned about the vertical joint.
• a basic concept of the present invention is that the blade should be hingedly mounted via joints 13 on the upper part of the blade, and that its lower cutting edge 2 should be located directly under or at a certain distance behind the joints 13, so that the blade, when striking an obstacle, such as a stone, can move backwards and upwards and the obstacle is passed without any damage to the blade.
• the implement Since the blade is hingedly mounted at its upper portion, also greatly curved blade shapes which are the best ones for snow clearing, can be made to move backwards and upwards when hitting an obstacle.
• the implement is provided with a spring means 14 which, in the preferred embodiment, is of a single-acting, pneumatic type with adjustable spring pressure which suitably can be set from the driver's cab for rapid resetting during use of the implement.
• the spring pressure should be as low as possible to protect the implement and the machine from impacts during work, at the same time as a varying spring pressure is ne ⁇ cessary for work on different grounds.
• a con ⁇ siderable pressure is needed for work in wet snow or on stony soil, and a low pressure is wanted for work in dry, newly- fallen snow or on light sandy soils.
• the fact that the spring pressure is easily and rapidly adjustable means that the implement can always be given an optimum spring pressure for all working conditions.
• a flexible means in the form of a wire 15 defines the forwardly directed move ⁇ ment of the blade as a consequence of the spring pressure, at the same time as it allows for an easy and smooth ad ⁇ justment of the front end position of the blade.
• a setting mechanism 18 which, in the embodiment shown, consists of a hook arrangement having a number of hooks and fixed to the underside of the bracket of the holder. More exactly, the wire extends through two sleeve-like recesses or holes 19 in two attachment lugs 20, and the wire portion therebe ⁇ tween is belayed round an optional hook. To prevent the wire from sliding out of the hook during slackening, the hook can be provided with a locking device, e.g. a pin 21. This arrangement has numerous advantages.
• the wire does, for example, not hinder the backwardly directed movement of the blade when striking an obstacle. Furthermore, it is simple and inexpensive to manufacture and may easily be made continuously variable, for example by means of a hy ⁇ draulic cylinder which replaces the hooks and which can be operated from the driver's seat. Moreover, there is no noise due to vibrations during use of the implement.
• the supporting shaft 5 is turn- ably connected to the front frame part 6, which makes it possible to incline the blade in a direction transverse to the direction of motion of the implement.
• a downwardly extending bracket arm 22 is non-rotatably arranged on the supporting shaft, and a hydraulic cylinder 23 connects the bracket arm to the frame part 6, the bracket arm, and thus the supporting shaft as well, being turnable by extending or retracting the hydraulic cylinder 23.
• the front part 6 and the rear part 7 of the frame are pivotably connected to one another at the upper portions via a joint 24, while the lower parts are outwardly movable away from each other by means of a hydraulic cylinder 25, as is apparent from Fig. 5.
• the blade can be made to move upwardly while carrying soil or snow which then is dumped sideways by inclining the blade by means of the hydraulic cylinders 9', 9", the sup- porting shaft 5 being in a raised, vertical position.
• Two wheels 26, one of which can be seen in Figs. 2 and 5 are mounted on the lower end of the rear frame part and help to stabilise the implement when the blade is thus raised.
• the main function of the wheels is to keep the imple- ment at a certain level above the ground, the irregulari ⁇ ties of the roadway being compensated for by the lifting arms of the loader being set in floating position.
• the implement according to the invention is provided with a conventional runner 27 adapted to be set at a certain level under the lower edge 2 of the blade. Since the blade is movable backwards and upwards when striking an obstacle, the runner would how ⁇ ever lose contact with the roadway if it were mounted, in " known manner, only on the back of the blade, the conse- quence being that the blade would cut into the roadway.
• the runner according to the invention is connected to the implement via a link mecha ⁇ nism comprising an upper, substantially backwardly extend- ing rod 28 fixedly connected to the beam 10, a substan ⁇ tially vertical rod 29 of variable length, a lower, sub ⁇ stantially backwardly extending rod 30 pivotably connected to the lower portion of the blade, and an attachement plate 31.
• the enumerated parts are connected to each other by means of joints 32, 33, 34 and 35.
• th implement can be used not only for snow clearing, scraping and grading of roads but also for similar jobs, such as ex cavation, the levelling of earth masses, etc.
• the implement has the advantage that the blade can be exchanged for other tools, e.g. rotary brooms.
• the implement can be coupled to many other ve ⁇ hicles than loaders with lifting arms, and the hydraulic cylinders of the implement may be replaced by other optional types of power generating means.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Cleaning Of Streets, Tracks, Or Beaches (AREA)
• Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20373817

Family Applications (1)

Country Status (2)

Cited By (1)

Families Citing this family (1)

Citations (4)

• 1988
  • 1988-10-31 SE SE8803939A patent/SE462340B/sv not_active IP Right Cessation
• 1989
  • 1989-10-31 WO PCT/SE1989/000610 patent/WO1990005218A1/en unknown

Patent Citations (4)

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