DE437811C - Safety gear for conveyor wagons that have become roped in brake mountains or the like. - Google Patents

Description

There are catch levers known that act as a reverse brake and in exceptional cases Backward movements of the vehicles (trolleys in braking mountains, etc.) as a result of a broken rope etc. come into effect. These brakes or safety gear can only be installed in routes that are driven by the vehicles only be driven in one direction. Furthermore, catch levers are known that ίο can be relocated in routes that are in both Directions are driven by a one-armed catch lever with a weight-loaded Angle lever, the feeler lever, is connected by a common axis of rotation. The tactile lever is used in normal operations with both upward moving full trams and Swinging a little about its pivot when the car goes down. The swing back The stand-by position takes place when the car is moving upwards by a counterweight, the can also be replaced by a spring, -nnd with descending wagons by the now catch lever acting as a counterweight. But if a car is now, it doesn't matter if it is moves up or down, becomes ropeless and makes its way at greater speed decreases downwards, the rapid rotation of the hitting against a carriage axis Sensing lever of the catch lever and rotated into the catch position and the car held with its second carriage axle. These safety gears have proven themselves very well, but still have the risk that the j The catch lever is unintentionally turned into the catch position and this disrupts normal conveyance can be. This risk is eliminated by the invention. The invention exists that on the catch lever or the catch claw or the catch hook the free end a one-armed lever arm is located, in such a way that the catch hook and the loading lever arm in two diverging and one another Rotate oppositely directed circular paths so that the loading lever arm at the point where the two circular paths intersect leaves the catch hook and the load on the catch hook ceases. The load on the load lever arm and thus of the catch hook can be regulated by the load consisting of a helical spring that moves around a on the loading lever arm articulated rod is placed and retightened with a nut. This loading spring does not yet come into effect when the catch hook is raised normally, so that the catch hook remains unloaded at normal driving speed. Only takes effect when the catch hook is raised further the loading spring, up to the sliding of the loading lever arm from the comb of the Catch hook. This additional load can therefore be regulated in such a way that it corresponds to the respective driving speed can be adjusted from the start. When the loading lever arm leaves the crest of the hook and thus leaves it, it goes the catch hook by its speed of rotation in the catch position, around a rope that has become roped Intercept car. The loading lever arm rests on the free end with a sliding roller the hook comb. The catch hook comb or sliding back of the catch hook is advantageously offset in the manner of a nose in order to support the bearing pressure to increase the loading lever arm. Is known a safety device for running on inclined tracks conveyor cars, which -but is only effective on one side, because a catch hook provided with a stop is eccentric is suspended around a pivot pin and the catcher has lateral stop pins, which lie outside of catch angles in the rest position and the thrown over catch hook support. In this safety gear, when knocking over the same, the tactile attachment strikes against a tooth which is beveled on both sides and is under the action of a spring this tooth the catch hook in the catch position. While therefore in this known safety gear the loading spring is always tensioned and so the loading lever arm against one its movement-limiting tooth presses in order to give way during the catching process resiliently, according to the invention, the loading spring is tension-free during normal travel, and the is at rest Load lever arm on the comb of the catch hook that goes through with the feeler arm a driver is connected.

Only when there is a risk of lifting the catch hook and thus the load lever arm lying on its comb is the load spring tensioned and the tension of the spring increases with increasing height of the upward rotation of the catch hook, while when the catch hook is turned so high that the one in the opposite direction and diverging circular path, the load lever slides off the ridge of the catch hook, the load lever arm falls downwards and the load spring becomes tension-free.
The drawing shows the safety gear

shown in Fig. ι when driving upwards; Fig. 2 shows the oscillation of the catch lever when traveling downwards; Fig. 3 shows the catch position and the position of the catch lever in which the role for the additional load is shown by dashed lines slides from him.

The safety gear is between the rails ι arranged and are drawn from the car only the wheels 2 with wheel axles. The safety gear persists the drawing of a rotatable about the fixed axis of rotation 3 angle lever 4, 5, whose Arm 5 is designed as a counterweight and for driving the loosely rotatable on the axis 3 and hook-shaped bent hook 6 is used at the other end. This is at its end that is loosely rotatable on the axis 3 designed fork-shaped and passes through the fork of the angle lever 4, 5, which is connected to a driver arm puts under the catch hook 6.

During normal upward and downward travel, the angle lever 4, 5 is swung without the catch hook 6 is influenced during the upward travel (Fig. 1), and takes place after the axle has passed through an automatic swing back of the feeler lever 4 by the compensating member when traveling upwards 5, and when driving downwards (Fig. 2) the nebula 4 oscillates back as well as the catch hook 6, which was lifted slightly from the feeler lever, both by the Compensation element 5 as well as by the weight of the catch hook 6.

At high speeds of normal downward travel, it can happen that the Catch hook 6 accidentally tipped over around its pivot pin 3 in the catch position.

This is prevented by the invention. According to this lies on the crest of the Hook 6 with a roller 7 the free end of a one-armed loading lever 8 and engages a rod 9 articulated to the lever 8, around which a helical spring over part of its length 10 lies, which is adjustable in tension. This spring force therefore loads the catch hook 6 as soon as it goes beyond the normal upward movement when traveling downwards, and The catch hook therefore has this additional load in the event of an unusually high upward oscillation to overcome, so that the normal swing back of the hook 6 even at high normal speed downhill is always secured. When traveling upwards (Fig. 1), the catch hook 6 remains unaffected. With normal Downward travel (Fig. 2) the catch hook 6 is raised slightly and thus also the Roller 7 and the lever arm 8, so that the spring 10 is raised so that it is in tension transforms. But if the car becomes ropeless and therefore at excessive speed moves downwards, the angle lever 4, 5 moves extremely quickly around the pivot 3 rotated, and the catch hook arrives in the position shown by dashed lines in Fig. 3, in which the roller 7 slides off the catch hook and he in Catch position is thrown over. The second axle of the car is caught. at This process, the spring 10 is increasingly tensioned, so that the force for throwing back of the catch hook had to overcome the increasing spring tension. To the bearing pressure of the lever 8 on the catch hook 6 to increase with increasing turning height of the hook is the crest of the hook Curved like a nose at its upper support parts for the roller 7.

It is therefore the invention for safety gears with one in both directions swinging tactile lever and a rotatable catch lever a safety device created.

Claims (2)

Patent claims: 1. Safety device for ropeless trolleys in brake mountains or the like with a feeler lever swinging in both directions and a rotatable one with a loading device provided catch lever or catch hook, characterized in that the loading device of the catch hook from a one-armed loading lever arm (8) with its open end resting on the comb of the catch hook (6) consists, which can be adjusted by a voltage-free in the rest position and during normal driving The spring (10) is loaded when it is lifted abnormally, and so is the spring tension long as the hook and thus the loading lever increases until the hook and the Loading levers rotate in two opposing and diverging circular paths, the loading lever arm (8) with its open end on which is a roller (7), slides from the comb of the hook (6) and the latter goes into the catching position. 2. Safety device according to claim 1, characterized in that the comb the catch hook (6) at the support point of the loading lever arm (8) designed like a nose is to increase the bearing pressure of the loading lever arm on the catch hook. 1 sheet of drawings.