DE210177C - - Google Patents

Description

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IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- M 210177 CLASS 35 c. GROUP

THE BROWN HOISTING MACHINERY COMP. INCLEVELAND (OhIo ^ YSt-A.).

Patented in the German Empire on August 14, 1906.

The invention relates to a device for controlling the winch of self-grippers by means of a hand control lever, the handle of which is used to couple the two drums is provided under influencing pressure contact, and is that with the Hand control lever ^ in addition to this pressure contact, the sliding shoe of the clutch of the Closing drum with sliding contact influencing the motor shaft and the drive linkage of the starting apparatus for "the winch motor are connected, so that by appropriate Handling of this one control lever in addition to pressure contact as well as the uncoupling of the both under the action of a spring or the like. Automatically coupling drums as also the coupling of one drum, which also serves as a closing drum, with the Motor is effected electrically and the latter is then started.

Similar devices are known in which the coupling of the locking drum with the drive shaft by swinging a control lever with greater effort mechanically, but the coupling of both drums to each other by triggering an am The same control lever arranged electrical contact takes place while the engine is through another, specially operated control lever must be switched on. the Control built in accordance with the invention has an essential feature in relation to these devices Increase in operational safety and simplification in handling, because the Electrically coupling the closing drum to the motor is a larger one Force expression of the worker is not required and the latter for the purpose of coupling and uncoupling both drums under themselves, Kuppeins of the closing drum with the engine and starting the same only has to operate a single handle with pressure contact.

The drawing represents an embodiment of the invention in longitudinal section.

The hubs h and h ^{1 of} the elevator drums D and D ¹ are loosely placed on the drive shaft α in a known manner, with one of their end faces almost touching one another. Within a drum in the D ¹ projecting annular flange of the drum D sitting on the long hub of the drum D ^1, the clutch plate C. ¹ with the brake band c ³ and the brake shoes c ⁴ , through which the two drums are coupled by means of coupling rings d ³ and D ² which are connected by rods r and axially displaceable on the hub h ^1. In a similar way, the brake shoes c ¹ , the brake band c and the disc C , the hub Ψ of which carries the coupling ring d ² , are arranged within a projecting flange of the shell of the drum D. ·

The protruding jacket flanges of both drums are U-shaped for the purpose of receiving brake shoes b and b ¹ , on which brake bands b ² rest, and the gripper ropes d and d ¹ 'are wound onto the remaining part of the jackets.

The displacement of the coupling rings d ² and D ² , d ^s is effected by means of the toggle levers L, I and U-, I ¹ . The links L and L ¹

ίο encompass the rings d ² and D ² bow-shaped and are connected to them by pivot pins. The toggle levers / and I ¹ each consist of three members, the first and second of which are connected via the pivot point ζ and z ¹ by bolts f and f ¹ , respectively; the second and third link each form a toggle lever, and the third is articulated ^{to the core of a solenoid S or S 1.}

The armature of the solenoids S and S ¹ rest on springs F and F ¹ , which influence the clutches when the current is switched off. A closing of the circuit causes a tightening of the e belonging to the solenoid armature 5 and a compression of the spring F, the β when opening the circuit again relaxed, pushes the plunger upwardly and disengages the motor from the drum D. An excitation of the solenoid S ¹ causes compression of the spring F ¹ and a movement of the toggle levers l ^l into the position indicated by dashed lines. The drums D and D ¹ are decoupled from each other. When the circuit e ¹ is opened, the spring F relaxes again, brings the toggle levers / into the position shown with solid lines and thereby couples the drums D and D ¹ .

In the circuit of the solenoid S ¹ e ¹ is a circuit breaker w ^1, which is controlled by a SoIenoid ¹ s. This lies in a circuit e " and is excited by acting on the push button ■ k or on the movable contact spring i and its contact pin, which parts are arranged in a known manner in the handle of the control lever H ² so that the handle with a Hand can operate the lever, its adjustment latch and the push button k at the same time.

The pivot p ^{2 of} the lever L ¹ is fixed by the pivot rod F ² with the one around. Point P swingable auxiliary lever H ¹ connected, which can be determined by a spring clip in different positions. By turning the lever H ² to the left (see figure), the hinge pin -p ² can also be moved to the left and can also be locked by locking the lever H ¹ . This causes the coupling rings D ² , d ^a in the next following, by the

fio spring F ¹ caused the clutch to move further inwards and thus press the clutch friction surfaces more tightly together. Wear of the friction surfaces can also be taken into account by adjusting the lever H ^{1 accordingly.}

According to the invention, the solenoid S is placed in a circuit e in which the circuit breaker w controlled by the solenoid s is switched on. From the solenoid s, lines e '"lead to the fixed contact shoe U ¹ and the contact shoe U attached to the foot of the" two-armed control lever H ² swinging around the axis 0 .

Furthermore, the pin of a push rod G sliding horizontally in guides g engages in the slot located on the lower arm of the lever H ² , at one end of which a pin is attached which is inserted into the slot t of the lever T of the usual control apparatus N of the electric drive machine M . engages, which is connected to this starter N by the lead wires m . ·

Mode of action:

It is assumed that the self-gripper hanging from the two ropes d and d ¹ with open gripping jaws is for example above the hold of a ship and the elevator drums D and D ^{1 are} coupled. Then the self-gripper is first lowered onto the pile of material using the brake of the drum D ^{1 , then this drum D 1 is} uncoupled from the drum D by pressing the push button k and thus the solenoids S ¹ , s ^{1 are} energized. The lever H ² is then returned to the vertical position without releasing the push button, so that the shoes U and U ^{1 come} into contact.

This energizes the solenoids s and S , pulls the levers I, L and couples the drum D to the shaft A. Moving back the lever H ² starts the. Machine M, whereupon the drum D winds up the rope d and causes the gripping jaws to close. Then the push button k is released. This results in an automatic recoupling of the two drums D and D ¹ , so that the self-gripper with its load is now lifted by the ropes d and dl, which are now simultaneously winding up onto the coupled drums D and D ¹ , until it is under the running beams of the crane .

Claims (1)

Patent claim: Device for controlling the winch of self-grippers by means of a Hand control lever, the handle of which has a pressure contact that influences the coupling of the two drums is provided, characterized in that with the hand control lever (H ² ), in addition to the pressure contact (k, i), the sliding shoe (U) of a sliding contact (U, U ¹ ) causing the coupling of the locking drum to the motor shaft and the drive linkage (G) of the Starter (N) for the winch motor (M) are connected, so that only by appropriate handling of one control lever (H ² ) with pressure contact both the decoupling of the two drums mechanically coupled by spring action or the like and the coupling of the closing drum (D ) is effected electrically with the engine and the latter is started. 1 sheet of drawings,