SE502955C2

SE502955C2 - Brush cassette for snow clearance brushes

Info

Publication number: SE502955C2
Application number: SE9301001A
Authority: SE
Inventors: Hans Hallberg
Original assignee: Hans Hallberg
Priority date: 1993-03-25
Filing date: 1993-03-25
Publication date: 1996-02-26
Also published as: SE9301001D0; SE9301001L

Abstract

The brush cassette (12) comprises an injection moulded profile. It is formed as a beam T-shaped in cross-section, with a base part (17) insertable in a fixture (11). The base forms the T crossbar and a body (20) extends radially relatively the drum from the base part. The body partly encloses the fixture (11) rounded free end parts. At the end of the body turned from the base part are arranged support strips (21), as a side support for brush shafts (13) inserted in recesses in the brush cassette (12).

Description

l0 15 20 25 30 35 502 955 TEKNISKA PROBLEMET Ändamålet med föreliggande uppfinning är att åstadkomma en borstkassett som klarar att utsättas för stora vridpàkän- ningar, utan att krängas ur sitt fäste. TECHNICAL PROBLEM The object of the present invention is to provide a brush cassette which is capable of being subjected to large torsional stresses, without being tilted out of its bracket.

LÖSNINGEN Detta ändamål uppnås enligt föreliggande uppfinning, genom att borstkassetten utgöres av en av ett elastiskt material strängsprutad profil, som är utformad att delvis omsluta fästets avrundade ändpartier, och att flänspartier är anordnade vid livets från basdelen vända ände, som sido- stöd för i urtagningarna införbara elastiska, hylsformade borstskaft.THE SOLUTION This object is achieved according to the present invention, in that the brush cassette consists of an extruded profile of an elastic material, which is designed to partially enclose the rounded end portions of the bracket, and that flange portions are arranged at the end facing away from the base part, as side supports in the recesses. insertable elastic, sleeve-shaped bristle shafts.

BESKRIVNING AV RITNINGARNA Uppfinningen kommer nedan att beskrivas med hänvisning till utföringsexempel som visas pá de bifogade ritningarna, på vilka Fig. l är en bruten vy som visar ett snitt genom borstkassett enligt uppfinningen och dess infästningsorgan, Fig. 2 visar borstkassetten utan borst i en perspektivvy, och Fig. 3 visar borstkassetten i Fig. 2 i en diametralt motsatt perspektivvy.DESCRIPTION OF THE DRAWINGS The invention will be described below with reference to exemplary embodiments shown in the accompanying drawings, in which Fig. 1 is a broken view showing a section through brush cassette according to the invention and its fastening means, Fig. 2 shows the brush cassette without bristles in a perspective view , and Fig. 3 shows the brush cassette of Fig. 2 in a diametrically opposite perspective view.

BESKRIVNING AV UTFÖRINGSEXEMPEL I Fig. l är med hänvisningsbeteckningen 10 antydd en till en snöröjningsborste hörande borsttrumma. Längs trummans mantelyta är medelst icke visade bultar monterade ett antal profilskenor ll, varav endast en är visad i Fig. l.DESCRIPTION OF EMBODIMENTS In Fig. 1, the reference numeral 10 denotes a brush drum belonging to a snow removal brush. A number of profile rails 11, of which only one is shown in Fig. 1, are mounted along the mantle surface of the drum by means of bolts (not shown).

Profilskenan ll upptar en balkprofil 12 som bildar fäste för ett flertal hylsformade borstskaft 13, vilka var och en inrymmer ett stort antal borsttrådar 14.The profile rail 11 receives a beam profile 12 which forms a bracket for a plurality of sleeve-shaped bristle shafts 13, each of which houses a large number of bristle wires 14.

Borstskaften 13 är fixerade i urtagningar l3a i balk- profilen 12 medelst en sprint 15, som upptages i en längsgående kanal 16, vilken sträcker sig längs en basdel 17 pá profilen 12. lO 15 20 25 30 502 955 3 Profilskenan 11 är U-formad med ett längsgående invändigt spår 18 i vardera skänkeln. Balkprofilens basdel 17 är formad med skuldror 19 som upptas av spåren 18. Ett livparti 20 på profilen 12 sträcker sig uppåt i Fig. 1 mellan profilskenans båda skänklar och stöder med sina något utåt rundade sidor 20a mot skänklarnas insidor och överkanter.The brush shafts 13 are fixed in recesses 13a in the beam profile 12 by means of a pin 15, which is received in a longitudinal channel 16, which extends along a base part 17 of the profile 12. The profile rail 11 is U-shaped with a longitudinal internal groove 18 in each leg. The base part 17 of the beam profile is formed with shoulders 19 which are occupied by the grooves 18. A web portion 20 of the profile 12 extends upwards in Fig. 1 between the two legs of the profile rail and supports with its slightly outwardly rounded sides 20a against the insides and upper edges of the legs.

Balkprofilens 12 livparti 20 är dessutom försett med två uppåtriktade flänspartier 21, vilka tjänar som sidostöd för borstskaften 13.The body portion 20 of the beam profile 12 is further provided with two upwardly directed flange portions 21, which serve as a side support for the bristle shafts 13.

Balkprofilen 12 är strängsprutad av ett segt plast- material, t.ex. NYLON. Borstskaften 13 är gjutna av något motsvarande segt och böjligt plastmaterial.The beam profile 12 is extruded from a tough plastic material, e.g. NYLON. The bristle shafts 13 are molded from a correspondingly tough and flexible plastic material.

Genom detta montage av borsttrådarna 14 i det böjelastiska borstskaftet 13, som i sin tur är fixerade med elasticitet i balkprofilen 12, vilken i sin tur är fasthållen med viss elasticitet i profilskenan ll, åstadkommes en gradvis ökande böjlighet i flera steg, i riktning radiellt utåt från trumman 11. Den gradvis ökande böjligheten innebär att påkänningarna på balkprofilens 12 basdel 17 reduceras väsentligt.By this mounting of the bristles 14 in the flexural elastic bristle shaft 13, which in turn are fixed with elasticity in the beam profile 12, which in turn is held with some elasticity in the profile rail 11, a gradually increasing flexibility in several steps, in radially outward direction is achieved. from the drum 11. The gradually increasing flexibility means that the stresses on the base part 17 of the beam profile 12 are significantly reduced.

Uppfinningen är ej begränsad till det ovan beskrivna utföringsexemplet, utan flera varianter är tänkbara inom ramen för efterföljande krav. Exempelvis kan balkprofilen 12 ha andra proportioner än visat.The invention is not limited to the embodiment described above, but several variants are conceivable within the scope of the following claims. For example, the beam profile 12 may have different proportions than shown.

Claims

1. 0 15 20 25 30 502 955 CLAIMS 1. Device for rotary brushes, in particular snow removal brushes for aerodromes and of a kind comprising a rotatable drum (10), on the outside of which are axially arranged brackets (II) for in the same end displaceable, replaceable brush cassettes (12), each of which is formed as a cross-sectional T-shaped beam with recesses (13a) extending perpendicular to the longitudinal axis of the profile, from the outer end of a beam web (20) to the opposite side of a base part (17), and which brackets are made of an inelastic material and are provided with rounded end portions, characterized in that the brush cassette (12) consists of an extruded profile of an elastic material, which is designed to partially enclose the bracket. (ll) rounded end portions, and that flange portions (21) are arranged at the end of the web facing away from the base part, as a side support for elastic, sleeve-shaped bristle shafts (13) which can be inserted into the recesses (13a).

Device according to claim 1, characterized in that the base part (17) is formed with a channel (16) for at least one pin (15), arranged to be threaded through the brush shaft (13) and the brush (14) for fixing of these and the shaft to the base part.