DE1694261U - BRAKE COMPENSATION. - Google Patents

Description

It is also necessary to use brake compensation.

The invention relates to a brake compensation for drawbar brakes for motor vehicles and trailers, the brake lever pivot point common to the two tie rods in a fixed Bearing block is slidably mounted within a long slot.

It is known that the efficiency of a brake in high Dimensions depends on the absolute brake compensation, i.e. on the uniform contact pressure of all brake shoes. The invention creates this prerequisite with the simplest means without any loss of stroke on the main operating lever. Through the simple design, the manufacturing costs are no greater than those of the usual pivot point bearing without brake compensation.

In a known compensating device, the variable brake lever pivot point is achieved by a G-pivot bracket. This arrangement requires a larger number of components with precise machining and thus high manufacturing costs. Disadvantageous is the one caused by the additional G-joint greater overall height, which is particularly important in the case of smaller Eadbremsen has an unfavorable effect. When the pull rod is operated, the G-joint is stressed by additional bending and must be dimensioned accordingly strong, is laughable Furthermore, when the brake linkage is removed, the steering block is movable and thus when transporting loose axles it is necessary to tie down this elbow bracket.

There are other compensating devices known, wherein in Lure a fixed pivot point on a disc central to the axis of rotation 2 or brake blocks are rotatably attached, which support themselves directly against each other or via a brake lever can and thus compensate for those connected to it Bringing brake pull rods «The disadvantage here are the very heavily stressed additional gels sorie the lifting losses in the main brake lever that arise during compensation, which have a great influence on the brake-wrench condition. In addition, this type of construction is also very expensive.

All of these pre-existing balancing devices are very sensitive to ingress of dirt at the attachment points the balancing devices is inevitable.

All of the disadvantages listed above are used when compensating for the brakes avoided according to the invention.

An embodiment of the subject matter of the invention is ir Drawing shown.

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Pig. 1 Top view of the brake compensation with removed Brake lever (6)

Pig. 2 Section A-B from brake compensation according to P-ig. 1

Pig. 3 2 Sectional drawing of the support frame (2) in front view and sectional view C-D

Pig. 4! Bearing drawing of the guide hub (3) in plan view and front view.

Ie. Embodiment according to Pig. i and Fig. 2 is at one Central axis 1 a support frame 2 attached. This trestle is like in Pig. 3 shown, preferably as a U-shaped carrier formed, in which in the wide web an elongated hole 2a and in the two side flanges at the same height of the elongated hole 2a Notches 2b are included at a certain distance from the central axis 1. The Pührungsnabe 3 has according to Pig. 4th zv / ei lateral webs 3a, which are located in the support frame 2 within guide the notch 2b and thereby prevent the guide hub 3 from rotating. Inside the Pührungsnabe 3 is the trunnion 4 rotatably mounted, at which one end the liockenflanseh 5 firmly connected and at the other end the brake lever 6 is screwed adjustably. The Pührungsnabe 3 is clamped by the Lockenzapfen 4, which when assembling through the long slide 2a of the support frame 2 is guided and is held from below by the height of the Pührungsnabe 3 and from above by the brake lever 6. The two Pull rods 7 are connected to the Uockenflansch 5 by means of bolts S. When adjusting the brake suction linkage, the Pührungsnabe 3 brought approximately in the fixed center of the elongated hole 2a of the support frame 2. A torsion spring 9 »which on the one hand on the cam flange 5 and on the other hand on the lateral web 3a supports the guide hub, causes the pull rods 7 to be returned quickly and prevents the rattling of the G-e— sant arrangement of the pulp compensation.

Gate. The advantage is that asr Stüxzbock 3 through the puncture of the Brens compensation does not receive any axial load, so that it can be carried out relatively easily and cheaply. The puncture of the brake compensation is achieved through the axial Movability of the lure pivot point during the braking process, so that an absolute tension compensation is achieved on both brake suction linkages and thus a perfect brake compensation is made possible in the simplest possible way.

The construction of the support frame can also be made in other structural forms, e.g. made of two parts, executed with closed side slits, or as Formed bracket on which the Pührungsnabe is arranged laterally axially displaceable. The trestle with the The guide hub can also consist of a fixed component which is arranged axially displaceably laterally on the axis is. The task of the torsion spring can also be fulfilled by leaf or tension springs.

Claims (4)

Sciiutzassprüciie: 1.) Brake compensation for linkage brakes τοπ vehicles sur actuation of two bath brakes by a common area lever, characterized in that the The brake lever pivot point is slidably mounted in a bearing block without any G-joint. 2.) Brake compensation according to claim 1, characterized in that the lOckenzapien (4) in a guide hub (3) is mounted, which is secured against twisting and zipping by webs (3a) or corresponding guides is. 3.} Brake compensation according to claim 1 and 2, characterized in that that the clamping of the guide hub (3) by the lock pin (4) takes place, the On the one hand through the Boekenflanseh (5) and on the other hand is held in place by the brake lever (6). 4.) Brake compensation according to claim 1 to 3, characterized in that that a reset spring (9) known per se for the pull rods (7) is arranged in such a way that a rattling of the moving ropes of the brake compensation is prevented. O T J ^ sf ^ S Lchsenfabr