CS253263B1 - Supporting device for two brake shoe edges - Google Patents

Abstract

The solution belongs to the support mechanism of the two ends of the brake shoes of the internal shoe brake with automatic reversing for trailers with a brake. The aim is to prevent the rotation of the rotary lever as a result of the reaction of the primary shoes during reversing. The support mechanism is designed so that during reversing, the excess braking torque arising as a result of the engagement of the secondary shoe causes the rotary lever to rotate. The auxiliary means achieve a slight rotation of the rotary lever, which is directly caused by the secondary shoe, around the radius of the primary shoe. The auxiliary means are designed in the form of a Georgian or a stop, while the stop is mounted with a stroke relative to the point of the attached secondary shoe (rotating lever).

Description

1 233468/2

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Claims (3)

OBJECT OF THE INVENTION A support device for two edges of a brake shoe with a trailer reverse auto- matic device having a brake, directly or obliquely fixed in the housing, of the end of the primary jaw, approaching forwards and with the lever in the housing or on the primary jaw with at the same time, during retraction as a result of the predominant moment secondary secondary jaw at its support lever, it can be switched off from the working position in the sense of a combined movement of the secondary jaw causing a shortening of the distance between the opposing ends of the primary and secondary sheets, and wherein, according to the order for patent no. WPF 16 D / 226485 approaching end of primary jaw operates without lever arm, ie. that it does not produce torque by its support force of the pivoting lever, at the same time it rests with the geometrical and frictional closure of the rotary lever, the diameter or diameters located under the geometric and frictional closure being made according to the developed frictional moment; In this case, the auxiliary means are taken into account when driving backwards, in order to obtain a slight rotation of the lever (3) of the wheel caliper (Rg) of the primary jaw (1) caused by the secondary jaw (2). Supporting device according to claim 1, characterized in that the stop (9) is positioned against the supporting extension (5) of the secondary jaw (2) on the support lever (4) of the pivoting lever (3) with the stroke of the arm. 3. A support device according to claim 1, characterized in that the working line of the spring (10) extends outside or parallel to the x-axis. 253263