DE135401C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The subject of the present invention is a path barrier in which the opening, ie the lifting of the barrier is carried out by an electric motor, while the closing, So the lowering of the barrier is effected by the weight of the latter. to For this purpose, a coupling is arranged between the engine and the barrier, which for Closing the barrier is disengaged and is indented to open it. These The coupling is designed as a claw coupling acting on one side, in order to thereby lift it of the barrier by hand.

The invention is shown in the accompanying drawing.

The two wires O ₁ and a ₂ form the main line. C ₁ C ₂ C ₃ are line closers, of which C ₁ remains closed until it is activated by the electromagnet r. is switched off, while C ₂ and C ₃ are switched off again immediately after the train has passed.

In addition to triggering the bell g _{, the section current closer C 1 also} causes the lamp / used to illuminate the transition to be switched on. When crossing the Stromschliefsers C ₂ of the magnet of the lever A _1, which is rotatably mounted in b opens as a result of excitation r ₅ of the Stromschliefser C _1, at the same time the dog clutch Ar ₁ Ar ₂ means by energizing the magnet T _1, is disengaged. C ₃ asleep by means of the switch S. _{2 shows} the circuit of the electric motor, and sets the same in movement. The transmission of the movement from the motor to the drive shaft n> of the barrier boom takes place by means of the tendon and worm wheel Jf ₁ t ₂ , which are designed to be self-locking in order to hold the boom in its vertical position. The worm wheel t _v, the hub of which _{forms the coupling half Ar 2} , sits loosely on the shaft w, while the other coupling half Ar ₁ is arranged displaceably on the shaft w with a groove and spring. The shaft transmits its movement to the barrier through the chain wheel Ar ₃ , the drive chain and the chain wheel Ar _{4 attached to the axis of rotation of the barrier.}

The lowering of the barrier is carried out by its own weight after disengaging the clutch Ar ₁ Ar ₂ , an air buffer being provided in a known manner to avoid bumps. While the barrier is being lowered, the drive chain is moved in the direction of the arrow and by means of the lever system A ₄ A ₃ (A _{3 can be} rotated in e !) A ₂ A _{5, by} means of the stop Z _1, the disc d, which can be moved loosely on the shaft n>, is moved to the left, so that the spiral spring f is compressed and the engagement of the clutch Ar ₁ Ar ₂ takes place again.
. At the end of the opening movement of the barrier by the electric motor m , the disk d is moved to the right again by means of the stop z ' ₂ attached to the chain and the lever system A ₂ A ₃ A ₄ , whereby the spring f is relaxed and by the levers A ₅ and η the switching off of the switches S ₂ and S ₁

is effective. The motor current is thus interrupted and the motor stops running and the lamp / is switched off.

The two barriers of a road barrier become the same through an appropriate connection closed and open at the same time.

The line closers only occur when they are crossed in a certain direction of travel in effectiveness; there are . on a single track for closing and opening the barrier is provided with three normally open contacts for back and forth travel.

The operation of the device is as follows:.

When driving over the line closing device C ₁ , which is located in a distance appropriate to the normal train speed in front of the relevant crossing, the bell g is triggered and the light bulb I is switched on by closing the circuit CJ ₁ -C ₁ - ^ - T ₄ - ( S _2. If the current closer _{C 2} , which is also located at a corresponding distance, is passed _{over, this closes the circuit ^ 1} -T ₆ -C ₂ -T _{1 -Ci 2.} This energizes the electromagnet T ₁ , pulling the rotatable in b Lever Zz ₁ on, so that clutch A ₁ Ar ₂ is disengaged and the barrier is lowered as a result of its own weight to close the clutch after the current through T _{1 has} ceased.

Shortly before its horizontal end position, the barrier moves the lever mechanism Zz ₄ Zi ₃ Zz ₂ ft ₅ and thus the disk d to the left by _{means of the stop Z 1 on the drive chain, so that C 2 is} already opened again and magnet T _{1 is} no longer excited the clutch is re-engaged.

At the same time, the closing of C ₂ causes C _{1 to} open, whereby the bell is switched off when the barrier goes down.

If the train has passed the transition, it closes the circuit O ₂ -T ₃ -C ₃ - ^ _{1 by passing over the normally open circuit C 3} and thereby excites the electromagnet T ₃ . This closes the switch s ₂ , whereby the motor circuit is closed and the motor starts. The barrier rises. During the lifting, the motor current flows around the magnet T ₂ at the same time and the latter prefstst the coupling halves Ar ₁ Ar ₂ firmly into one another by means of the lever Zi _1. If the barrier now approaches its vertical end position, the lever Zz ₄ , following the movement of z ₂ , is moved upwards and rotates the angle lever Zz ₃ , which can be rotated in e _{, which in turn turns lever A 2} together with the lever firmly connected to it Z? ₅ as well as the disk d moves to the right. Here, the switches S ₁ s _{z are opened} by the levers η and Zj ₅ , and the spring f is relaxed.

Since the clutch Ar ₁ Zf _{2 is} still engaged and the worm gear Jf ₁ i _{2 is} self-locking, the barrier is held in its vertical end position. As a result of the design of the coupling as a claw coupling acting on one side, lifting of the barrier is made possible by people trapped on the embankment. As a result of the opposite rotation of Ar _1, this coupling half slides over the teeth of the other Ar ₂ and is shifted to the right together with the spring f and washer d, as well as the lever Zz ₅ h ₂ n.

If the lifting stops, the barrier closes again because the coupling no longer has a locking effect on the shaft due to its own weight. Should the barrier be raised to its vertical end position for any reason, the lamp Z is not switched off by this, since, as shown in dotted lines in Fig. 2, the lever Zz ₁ together with the lever Zz ₆ as a result of the clutch being disengaged to the left is moved and the hook-shaped projection of the latter in the rotatable lever η 0 at its one end depresses; so that the other end of the lever comes to rest η higher than the shift lever _S1. If the lever Zz ₂ is now shifted to the right with the lever n, following the movement of h ^ h ^ , the lever η does not act on the lever S ₁ , since the short arm of the lever η through the on the long Ann acting lever h _{e is} held up; Rather, η goes through switch S ₁ without opening it.

Claims (1)

Patent Claims: i. An electrically operated path barrier controlled by the moving train, in which the activation of the electric motor for opening the barrier, as well as the activation of the intended signals by the train is effected by means of a line closers, characterized by a one-way clutch (Ic ₁ Ic ₂ ), which , the drive apparatus (k _s kj of the barrier and the motor (m) as connects, that the latter through the intermediary of an arranged behind the barrier Streckenstromschliefsers (c _z) only cause the lifting of the barrier, during the lowering thereof by its own weight to disengage Coupling (k _l k ₂ ) takes place through the intermediary of a section current closure (c ₂ ) arranged in front of the barrier, with the motor being switched off after the upward movement of the Turnpike is caused by the latter itself by means of a lever mechanism (h ₂ h _s h ₄ h ₅ ) , which at the same time switches off the lighting of the barrier.
An embodiment of the barrier according to claim 1, characterized in that the coupling lever (hj with an arm (Ji ₆ ) controlled by two electromagnets (r _x and r ₂ ) excited under the action of the line closers (c. ₂ and c _%) is provided, which interacts with a pawl (s) linked to the switching lever (hj ) in such a way that the motor switches off the lighting (I) when the barrier is lifted, while it is not switched off when the tree is lifted by hand. For this purpose ι sheet of drawings.