DE1234186B - Gutter brush for sweepers - Google Patents

Description

GERMAN WTTWt PATENT OFFICE

EDITORIAL DEVELOPMENT German class: 9b-7/08

Number: 1 234186

File number: R 40351III / 9 b

J 234 186 Filing date: April 7, 1965

Opened on: February 16, 1967

The invention relates to a gutter broom for sweeping machines, the wire bristle strips of which individually are arranged interchangeably in brackets in the plate-shaped broom body.

In such gutter brushes, a simple one should have sufficient stability and low weight Renewal of the bristle set should be possible on the spot.

In a known gutter broom, the plate-shaped broom body made of sheet metal points to the Outer circumference on the underside has radial slots through which V-shaped bundles of bristles can be inserted and can be fixed above the slots by retaining rings extending in the circumferential direction. At this known arrangement, the bristle bundles can relatively easily radially and in the direction of the working pressure, d. H. against the direction of rotation, offset, since they are only fixed in the slot in the circumferential direction, but in the circumferential direction on the fastening rings can slide.

This deficiency is avoided in another known embodiment, in which in one massive broom body made of cast light metal, radial grooves with dovetail or keyhole-shaped Cross-section are arranged in which appropriately prepared rows of bristles with their The base can be pushed in. In this embodiment, on the one hand, the broom body must have a relatively large Have strength, and it is relatively heavy even when using light metal castings, and on the other hand, difficulties arise in defining the rows of bristles in the grooves.

This problem is to be solved according to a further known embodiment in that the V-shaped bundles of bristles pushed onto webs extending radially from a ring until they come into contact with the ring and fastened by a fastening ring screwed onto the free side of the webs. In this known arrangement, too, the replacement of the bristles is cumbersome, and the manufacture is difficult due to the complicated design of the rings and webs.

It is the object of the invention to create such a gutter broom, which is easy and cheap to manufacture and in which the rows of bristles can also be used by unskilled workers can be exchanged without difficulty and securely fixed in their exact position.

According to the invention, this is achieved in that the sheet steel brush body is deeply pronounced Has circumferential bead, the flanks of which enclose an angle greater than 90 ° and the outer one

Gutter brush for sweepers

Applicant:

Jakob Reisländer o. H. G., factory techn. Bürsten, Munich 12, Westendstr. 146

ίο named as inventor:

Jakob Reisländer, Munich

Flank has a right-angled fold on its outer circumference, which is the limit for the on this flank forms inserted bristle strips with holders placed on it. Preferably they are Holders for the bristle strips according to a precise partial process by means of spot welding on the The underside of the outer flank is attached in a radially upright position and has a dovetail-shaped sectional profile and have slots at the inner ends into which a safety wire is inserted to prevent it from sliding out the bristle strips pushed into the holders prevent it.

The invention is explained in more detail below with reference to the drawings using an exemplary embodiment explained. It shows

F i g. 1 the broom body in view from below with the brackets for the bristle strips attached using the spot welding process,
F i g. 2 shows a section II at FIG. 1,
F i g. 3 a view of a bristle strip,

F i g. 4 shows a section of the broom body according to FIG. 1 with holder for a bristle strip and FIG. 5 shows a section II-II in FIG. 4th
The broom body 1 is made of an approximately 2 mm thick sheet steel in the pressing process in the shape of a plate. It has a deeply pronounced bead, a central bore la is provided in its horizontal surface, which serves a pin to a mounting flange on the drive shaft for receiving. Holes Ib are arranged in the flat surface for fastening the broom body to the drive flange by means of screws. This type of fastening ensures that the broom runs precisely. Flankenlc and Ie are pressed in at the edge of the bead and enclose an angle greater than 90 °. The outer flank 1 e has a right-angled fold If on its outer edge and forms a limit stop for the in on this flank

709 509/31

Claims (2)

applied retaining bars 2 inserted bristle strips 4. The brackets 2 are attached to the flank 1 e in a precise division around the circumference by means of spot welding. The holders 2 have a dovetail-shaped cross-sectional profile and have slots 2a at their inner ends, into which a safety wire 3 is inserted, which prevents the bristle strips 4 pushed into the holders 2 from sliding out. The bristle strip 4 is filled with bristles 5, for which corrugated flat steel wire is used, because this offers better resistance during the sweeping process to corrosion, vibration and breakage than flat wire. After the bristle strips 4 have been pushed into the holders 2, the safety wire 3 is inserted into the slots 2a, whereupon the gutter broom is ready for use. Patent claims: 1. Gutter brush for sweeping machines, the wire bristle strips of which can be individually exchanged in Mounts in the plate-shaped broom body. are ordered, characterized in that the sheet steel brush body (1) has a deeply pronounced bead, the flanks (1 c, 1 e) enclose an angle greater than 90 ° and the outer flank (1 c) a right-angled fold (If) which forms the limit for the bristle strips (4, 5) pushed into the holders (2) placed on this flank. 2. Gutter brush for sweeping machines according to claim 1, characterized in that the brackets (2) for the bristle strips (4) are fixed radially standing after a precise sub-method by means of spot welding on the underside of the outer flank (Ic), have a dovetail-shaped sectional profile and are attached to the inner ends have slots ( 2a) into which a safety wire (3) is inserted, which prevents the bristle strips (4) pushed into the holders (2) from sliding out. Considered publications:
German Patent No. 1127 867;
German utility model No. 1784 729;
U.S. Patent Nos. 3,050,763, 1,557,166. 20th 1 sheet of drawings 709 509/31 2. 67 © Bundesdruckerei Berlin