CS197421B1 - Device for automatic, on the load dependent regulation of the braking force on the non-sprung trailers - Google Patents

Abstract

1500302 Load responsive breaking system KOMBINAT FORTSCHRITT LANDMASCHINEN NEUSTADT IN SACHSEN VEB 23 July 1975 [24 July 1974] 30743/75 Heading F2F A braking force regulator for an unsprung single-axle trailer comprises a brake force limiter 16, means to automatically adjust the device 16 in dependence on loading of the trailer and means including an inertia body displaceable in dependence on decleration of the trailer to also adjust the device 16. The inertia body may be a pendulum 13 or a sliding weight (19, Fig. 3, not shown) connected to a lever arrangement for adjusting the device 16. A traction eye 3 is connected to a bifurcated lever 4 and journalled on a horizontal bolt 2 at the forward end of the trailer draw bar 1, the rearward ends of lever 4 being fastened by tension springs 5 to the bar 1.

Description

BACKGROUND OF THE INVENTION The present invention relates to an apparatus for automatic load-dependent braking force control on unsprung trailers.

In order to improve the braking effect, prevent the braked and increase traffic safety on ^ENGINE orovýc ^h vehi ^d lec ^H and ^the V ^e sec ^h m ^{* i} AC ^o n ^y restricted ^b rzdn ^s forces ^kt er ^s regulate the brake pressure at the respective axis depending on axle load. The axle springs of the vehicle are used to control the braking force limiter. However, this control method is not possible on unsprung single-axle trailers. Until now ^regulated, for ^{instance IV.E} snýc ^h vehicles. ^b rzdový 'pressure by using ^{I t t} Admin istra upňov ^{s it, manually some} Christians ^Lád s ^h o u ^g re ^acrylate oru brake pressure for idle-position of the half-full. With these brake pressure regulators, the correct brake pressure can only be set for certain axle loads accordingly. However, since uniaxial trailers are used predominantly for short transport routes in agriculture, there are frequent changes in loading, so manual adjustments are required more frequently, resulting in a noticeable waste of time. Furthermore, it has been shown that manual adjustment is often neglected, thereby increasing the risk of excessive braking due to incorrect adjustment of the braking force.

The purpose of the invention is to create ly ^from uniform in ^y z ^b swarm ^IT neo ^{dp of} the ^Z en ^Star uniaxial p ^{Ri s y} under ^{RI DRIVING} mk automatic, load-dependent brake force control, thereby improving traffic ^safety, changes ^{IL ák} la ^y n ^dy o ^{b L} UHU and zatoanova ^ ies with Chy ^b serves as ^b.

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SUMMARY OF THE INVENTION It is an object of the invention to utilize the saddle load of a trailer as a variable for a self-acting brake force limiter.

According to the invention, this is achieved by providing a braking force limiter on the drawbar and connected to a spring-operated forked lever via a lever arrangement or the like, the braking force limiter being operable on the one hand by a movable additive as a pendulum or antifriction mass deceleration, both through drawbar depending on load ·

The forked lever is being coupled to the lifting eye and with it the rocker pivotable about a joint bolt fixed · drawbar, whereby the rear end of the forked ^{Star lever} · p ^s fixed ^of Ales ^P on one tractive ^p Ruz Ina ^P ro ^y straightening harness ^iz en LOAD ^also on the shackle, whereas the fork lever and a braking force limiter is arranged linkage for regulating the braking pressure, consisting of a drawbar · přenáěecí rods and connecting rods ·

According to a further embodiment of the invention, a bearing pin is attached to the drawbar, around which a pendulum is rigidly connected to the articulated lever, to whose other end a rod assembly consisting of a drawbar, a transfer bar and a connecting rod is articulated.

According to the last embodiment of the invention, it is around a bearing. a pendulum rod is pivotably mounted to act on the sliding movable antifriction mass.

The invention will now be described by way of example with reference to the drawings, in which:. FIG. 1 is a side view; FIG. 2 is a top view of FIG. 1; FIG. 3 is a side view of another embodiment; FIG. 4 is a schematic representation of the braking force limiter control by means of a seat load; FIG. 5 is a schematic representation of the braking force limiter control by the deceleration occurring during braking; and FIG.

At the front end of the drawbar 1 of the uniaxial trailer, not shown, a suspension eye 2 is mounted around the horizontal hinge bolt 2 with which the forked lever 6 is connected. A tension spring 2 is attached to the rear end of the forked lever 2, the other end of which is suspended in the eye located on the drawbar 1. By means of these tension springs 5, the seat load acting on the lifting eye 2 is assumed. load. In addition, at the end of the forked lever 6, an extension rod 6 is rigidly connected to which an upwardly extending pull rod 6 is articulated. A transfer rod 8 is articulated to this drawbar X. The articulated lever is movably coupled to the rear end of the transfer rod 8 in the travel direction by means of a connecting bolt 2. 10, the other end of which is provided with a receiving eye 11, whereby the articulated lever 10 is mounted on the bearing pin 52 located on the bearing. drawbar £. In addition, a pendulum 12 is attached to the receiving eye 11, which is thus also pivotable around the bearing pin 52, approx. thus, in the front third of the transfer rod 2, the connecting rod 14 is articulated to the control lever 65 of the restrictor ¹⁶ . ^b rzdn ^{E clays. E U} pivotal machine ^it is .vytvo ^of eno so ^{when Z} e nenalo ^F gated ^CMD věsu occupy extension rod £, přenášeoí bar 8 and the articulated lever 10 is approximately horizontal and drawbar plohu X is a connecting rod 14 around a vertical position.

In another embodiment of FIG. 3, a pendulum bar is mounted around the bearing pin 12

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IX 'to which the connecting rod 18 is articulated to control the sliding movable antifriction mass 19.

The function of the automatic load-dependent brake force control will now be explained on the basis of the schematic representations in FIGS. 4 to 6.

For a better understanding, only the operation of the braking force limiter 16 when loading a trailer in a static state is first described. Thus, in Fig. 4, the devices for actuating the brake force limiter 16 during deceleration have been omitted. The loading of the trailer increases the seat load transmitted via the towing eye 2 to the towing vehicle. This saddle load causes the lifting eye 2 to move upwardly around the hinge bolt 2, while thereby the forked lever 6 moves downwardly in comparison with the force of the tension springs 2. At the same time, the extension rod 6 with the articulated drawbar χ swings down. This further deflects the transmission rod 8 around the connecting bolt fa by means of a connecting rod 14 articulated to the transmission rod fi, the control lever 15 adjusts continuously and in proportion to the weight of the load, and thus automatically adjusts the required brake pressure to the brake force limiter 16. This position of the rod assembly is shown in dashed lines. The operation of the braking force limiter 16 during deceleration during braking and irrespective of the loading of the trailer is illustrated by the schematic representation in FIG. On deceleration, the pendulum 13 swings around the bearing pin 12, and since the articulated lever 10 is fixed in rigid connection with the pendulum 12, the articulated lever 10 deviates by the same angle as the pendulum. Since the transmission rod 8 is connected to the articulated lever 10 by means of the connecting bolt f, the transmission rod 8 also deflects around the bearing pin 12 and thus causes the brake lever limiter 16 to be adjusted via the connecting rod 14, which is ^No representation ^of amino alkylated tert ^h. MMN ^and knou- ^If n ^s n ^{s s or} both of the aforementioned series zatlení by zabrzáuje loaded trailer, it follows that according to Fig. 6 a schematic representation of a lever and a rod 16 and the setting braking force limiter. When the trailer is loaded, the fork-like lever 1 assumes the position shown in dotted lines by the load on the suspension eye 2 and hence the linkage, whereby the control lever 15 of the brake force limiter 16 moves from position I to position II. During braking, the pendulum 13 deflects due to the deceleration occurring, and by means of the articulated lever 10 the transmission rod 8 is deflected and the connecting rod 14 moved to it by the control lever. Braking force limiter 16 to position III. By adjusting the control lever 15 of the brake force limiter 16 from position I to position II or position III, the brake pressure is increased.

Claims (4)

SUBJECT OF THE INVENTION 1. Apparatus for the automatic, load-dependent brake force control on unsprung trailers, ^{characterized} značuj ^s ci -The that ^T and ^Z n ^{i s} drawbar ⁽¹⁾ is n savings ^asks limiter ^{(16) n e} BRZ forces and by a system of levers is associated with a spring-operated fork-shaped lever (4), wherein the limiter (16) braking force is controllable partly through the additional materials as a pendulum (13) or antifriction material (19) independently of the retard ^l measurement is ^d in ^the ^ ^ ost ďnictvim those ^from non drawbar ⁽¹⁾ in STI ^^ conclusions on zatlení · Device according to claim 1, characterized in that the fork-type lever (4) is connected to the lifting eye (3) and is coupled therewith by a rocker arm around a hinge bolt (2) attached to the drawbar (1), fork-shaped lever (4) is fixed to at least one tension spring (5) ^{characterized} in straightening ^{and dl} ew ^h o zaHžení on Z ^and V ^e Tight eye (3) »while the fork-shaped lever (4) and the restrictor (16) braking force linkage is provided for regulating the braking pressure, consisting of a bar (7) přenášeoí rod (8) linking ^{and t} and y ^p e ⁽¹ 4) · 3 · Device according to claim 1 or 2, characterized in that the drawbar (1) is mounted a bearing pin (12) around which is swingably mounted pendulum (13) rigidly connected to the hinge P ^{If the} OU G ^{0) to} its ^F - ^{hole hé} him end ^p Rikli ^b eno ^rod oic tataojí, sestávaj ^s c ^s a ^{T and} don ^t y ^p e ^{(7), eg} enáěeo ^s t ^{y C} e ⁽⁸⁾ and ^p ojovac ^{even those} flats ⁽¹ 4) · 4 · A device according to claim 3, characterized in that around the bearing pin (12) is pivotally bulk ^to YVA ^dl OC ^{and the} No. (Π) for půsotení ^P Pusher ^{e p} ohyblivou anti ^f rik ^{N NU} materials ⁽¹ 9) ·