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
  • E01H5/061—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 scraper blades

Definitions

• the invention relates to a device for fastening an exchangeable wear strip on the snow blade of a snow plow, with retaining projections arranged on the snow blade and projecting in the direction of the wear strip, which engage in recesses in the wear strip.
• a fastener known according to the prior art (DE-AS-24 44 286) has also proven itself, in which fastening elements on the clearing blade, for. B. are provided in the form of bolts which engage in lateral notches on the individual sections of the wear strip, with clamping claws being provided on the underside of the dozer blade, which grip around the upper edge of the wear strip and clamp against the lower edge of the dozer blade.
• the last-mentioned attachment has the advantage of a special one
• BESTATIGUNGSKOPIE easy assembly and disassembly, but is complex and has the disadvantage that the wear bar can detach from the snow plow blade if z. B. in the event of hard impacts, the sections of the wear strip held firmly by the clamping claws slip out of the clamping connection. Replaced at the wrong time
• Wear strip sections can pose a significant risk of accidents for subsequent traffic.
• Another disadvantage is that the clamping claws on the upper edge of the wear strip hinder the flow of the loosened snow in the direction of the snow plow, so that especially at high driving speeds of the snow plow, the snow splashes on the clamping claws in an uncontrolled manner and the windshield of the driver's cabin of the snow plow becomes dirty.
• the invention proposes, starting from a device of the type mentioned at the outset,
• each engagement element consists of a holding part fastened to the clearing plate and a locking part connected to the holding part, which can be rotated between an unlocking position and a locking position about an axis of rotation running perpendicular to the clearing plate,
• both the holding part and the locking part are provided with radial projections and recesses with respect to the axis of rotation of the locking part, which, when viewed in the unlocked position of the locking part, are aligned with one another perpendicular to the clearing blade, - That the inner contours of the recesses in the wear strip correspond to the outer contours of the holding parts and locking parts in the unlocked position,
• the fastening device has the advantage that when the locking parts are in the locked position, the wear bar is positively fixed in all directions on the one hand to the holding parts and on the other hand to the locking parts of all the holding projections, so that the wearing bar is not detached from the holding projections in any direction can.
• the structural outlay for the fastening device according to the invention is very small and hardly goes beyond what is required for a simple screw fastening. Because of its compact design, the fastening device according to the invention hardly hinders the flow of snow over the wear strip and the subsequent clearing blade.
• Unlocked position associated stops on the holding part is limited. This ensures that the locking part only between the fixed defined locking position and the equally defined unlocking position pivoted and can not be rotated arbitrarily.
• the locking part can be clamped against the holding part and the wear strip by means of a clamping screw running in the axis of rotation, a slipping clutch being arranged between this clamping screw and the locking part, which takes the locking part in the respective direction of rotation of the clamping screw when the clamping screw is turned until it stops at the stop of the holding part assigned to the locking position or the unlocking position.
• This slip clutch expediently has a spring which is supported on the holding part and presses the locking part in the direction of the axis of rotation against the head of the clamping screw.
• This slip clutch simplifies assembly insofar as all that is required to tighten the tensioning screw, for example using an impact wrench, for assembly after the wear strip has been placed on the holding projections.
• the clamping screw takes the locking part with it via the slip clutch until it strikes the stop located there in the locking position.
• the slip clutch slips, so that the tensioning screw can be tightened while the locking part remains in the locking position.
• the tensioning screw is also first loosened with an impact wrench until the locking part comes free from the wear strip and the holding part under the action of the spring so that it can twist. As soon as it is released, the tensioning screw takes it over the slip clutch and turns it into the unlocked position, where it strikes the stop of the holding part located there.
• the outer contour of the locking part gradually widens in the direction of the clearing blade until the outer contour of the holding part is reached.
• This configuration of the retaining projection makes it easier to accomplish the above-described pushing of the wear strip onto the individual retaining projections. It is sufficient if the recesses in the wear strip are roughly hit by the holding projections when the wear strip is attached. The more precise alignment then takes place automatically when the wear strip is pushed further onto the retaining projections.
• the holding part and the locking part can, for example, have the shape of a rectangle when viewed in the direction of the dozer blade, the narrow sides of the rectangle representing the projections and the long sides of the rectangle the recesses with respect to the axis of rotation of the locking part.
• the recesses in the wear strip are widened in the longitudinal direction of the wear strip in such a way that this wear strip can be fixed on clearing blades of different snow plow manufacturers with different spacings of the holding projections.
• the widenings of the recesses in the wear strip are dimensioned such that, in the longitudinal direction of the wear strip, at least one retaining projection on the clearing blade type left and a retaining projection on the right recess reveal of a recess.
• some or all of the recesses in the wear strip are closed by thin, vulcanized rubber skins. These rubber skins can be easily cut out with a knife by the snow plow operator before the first use.
• Rhombus the shape of an ellipse, the shape of a four-armed cross with arms rounded at the ends, the shape of an equilateral triangle or the shape of a double trapezoid. All of these geometric shapes have in
• Fig. 1 Schematic of a vertical section through the snow plow blade and the fastening device according to the invention and the means this fastening device fixed wear bar;
• Fig. 2 schematically a view of the fastening device in the direction of arrow A in Fig. 1;
• Fig. 3 in the same representation as Fig. 1 in a modified version
• Fig. 10 a compilation of two
• Wear bar can be equipped, which has more recesses than each of the two clearing plates has retaining projections;
• Fig. 11 a compilation of two
• the wear strip has recesses which are widened to the side in order to be compatible with both clearing blades.
• the clearing blade of a snow plow which is in its position of use and is only partially shown, is designated by the reference number 1.
• the clearing blade 1 is reinforced on its lower edge on the back by a reinforcement angle 2.
• On the front of the dozer blade 1 are opposite the reinforcement angle 2 and distributed over the length of the lower edge of the dozer blade 1 holding projections 3, of which only one is shown in Figures 1 and 2.
• Each holding projection 3 consists of a holding part 4, which is fastened to the clearing blade 1, and a fastening locking part 5 which is rotatably attached to the holding part about an axis of rotation 6 which extends perpendicular to the plane of the dozer blade.
• the reinforcement angle 2 can also be arranged on the front or the lower edge of the dozer blade.
• the holding part 4 can be fastened to the clearing blade 1 directly or indirectly, for example with the interposition of a shock absorber rail or the reinforcement angle 2.
• positive or frictional connections are also used as fastening means Question, e.g. B. screw connections, plug connections or clamp connections. It is essential that the holding part 4 is fixed non-rotatably with respect to the dozer blade 1, specifically in such a way that sufficiently large forces can be transmitted from the dozer blade 1 via the holding projections 3 to the wear strip.
• Both the holding part 4 and the locking part 5, which is rotatably fastened to this have radial projections and radial recesses with respect to the axis of rotation 6 of the locking part 5, which, when viewed in the unlocked position of the locking part 5, are aligned with one another perpendicular to the clearing blade.
• the holding part 4 on the one hand and the locking part 5 on the other hand each have the shape of a rectangle, the short sides of the rectangles projecting in the radial direction with respect to the axis of rotation 6 of the locking part 5 and thus the represent radial projections, while the long sides of the rectangles spring back in relation to this axis of rotation 6 in the radial direction and thus form the radial recesses.
• the rectangular holding part 4 and the likewise rectangular locking part 5 lie congruently one above the other. If the locking part 5 is rotated by 90 ° about the axis of rotation 6, it is in the locking position (see FIGS.
• a wear strip 7 is plugged onto the holding projections 3.
• the wear strip 7 is provided with recesses 8 where the holding projections 3 are located, the inner contours of which correspond to the outer contours of the holding part 4 and locking part 5 in the locking position.
• these recesses 8 accordingly have a rectangular inner contour, such that the retaining projection 3 fits exactly into the recess 7 when the unlocking part 5 is in the unlocked position.
• the axis of rotation 6 is embodied by a clamping screw 6a, the head of which rests on the locking part 5 from the outside and the shaft of which penetrates the locking part 5 and can be screwed into the holding part 4.
• This clamping screw 6a braces the locking part 5 against the wear strip 7 and the holding part 4th
• the locking parts 5 are rotated back into the unlocking position, so that the wear strip 7 can be pushed off the holding elements 3 without any problems.
• the locking part 5 is secured against rotation in the locking position by a projection 5a located on the underside of the locking part 5, which positively engages in a corresponding recess 4a in the fixed holding part 4.
• a projection 5a located on the underside of the locking part 5, which positively engages in a corresponding recess 4a in the fixed holding part 4.
• other anti-twist devices customary in the prior art can of course also be used.
• the outer contour of the locking part 5 gradually widens in the direction of the dozer blade until the outer contour of the holding part 4 is reached. This makes it easier to push the recesses 8 in the wear strip 7 onto the individual holding projections 3.
• the holding part 4 is provided with a stop block 9 which has a stop 9a against which the locking part strikes in the locking position and furthermore has a stop 9b against which the locking part 5 strikes in the unlocking position.
• the locking part 5 can rotate by 90 ° between these two stops 9a and 9b.
• a slipping clutch 10 is additionally provided between the head of the tensioning screw 6a and the locking part 5, which is biased by a spring 11 arranged between the holding part 4 and the locking part 5 and takes the locking part 5 in the respective direction of rotation of the tensioning screw 6a until the locking part 5 strikes one of the stops 9a or 9b.
• the complete unscrewing of the clamping screw 6a is prevented by a limit stop 12 located at the end of the clamping screw 6a.
• FIGS. 5 to 9 other geometrical shapes of the holding part 4 and locking part 5 are also possible.
• FIG. 5 they have the shape of a rhombus
• FIG. 6 the shape of an ellipse
• FIG. 7 the shape of a four-pointed cross with arms rounded at the ends
• FIG. 8 the shape of an equilateral triangle
• FIG. 9 the shape a double trapezoid.
• FIGS. 4 to 9 shows, there are different overlap regions of the locking part 5 in the locked position above the wear strip 7 in the different geometric configurations depending on the respective angle of rotation, so that it is possible to optimally adapt the respective fastening device to the requirements.
• FIG. 10 schematically shows two clearing plates 1A and 1B from different manufacturers A and B with different holding projection distances.
• Is below 10 shows a wear bar 7 which fits the two clearing bars 1A and 1B.
• the wear bar 7 has more recesses 8 than each of the clearing bars 1A or 1B has retaining projections.
• the clearing plates 1A or 1B are equipped with the wear strip 7 shown below, some of the recesses 8 in the wear strip 7 remain unoccupied. So that snow cannot pass through the unoccupied recesses 8 during operation, all the recesses 8 are provided with a rubber wall during the manufacture of the wear strips 7. This thin rubber wall can be removed by the operator of the snow plow with a knife if necessary.
• FIG. 11 shows again schematically two clearing plates 1A and 1B from different manufacturers A and B with different holding projection distances.
• the recesses 8 in the wear bar 7 are widened such that the retaining projections of both clearing bars 1A and 1B can pass through.
• These widenings in the wear strip 7 are dimensioned such that, seen in the longitudinal direction of the wear strip 7, at least one holding projection 3 bears on the left and one holding projection 3 on the right recess reveal of a recess 8. This ensures that, despite the widened recesses 8, the wear strip 7 remains positively attached to the clearing blade 1 in all conceivable directions.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Cleaning Of Streets, Tracks, Or Beaches (AREA)
• Clamps And Clips (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7700306

Family Applications (1)

Country Status (7)

Families Citing this family (3)

Family Cites Families (3)

• 2001
  • 2001-09-26 DE DE10147393A patent/DE10147393A1/de not_active Withdrawn
• 2002
  • 2002-09-26 EP EP02777221A patent/EP1430183B1/fr not_active Expired - Lifetime
  • 2002-09-26 AU AU2002338800A patent/AU2002338800A1/en not_active Abandoned
  • 2002-09-26 WO PCT/EP2002/010809 patent/WO2003029564A2/fr active IP Right Grant
  • 2002-09-26 AT AT02777221T patent/ATE408730T1/de active
  • 2002-09-26 PL PL02371783A patent/PL371783A1/xx not_active Application Discontinuation
  • 2002-09-26 DE DE50212795T patent/DE50212795D1/de not_active Expired - Lifetime
• 2004
  • 2004-03-19 NO NO20041154A patent/NO20041154L/no not_active Application Discontinuation

Non-Patent Citations (1)

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