DE245346C

DE245346C -

Info

Publication number: DE245346C
Application number: DENDAT245346D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

-M 245346.-KLASSE 31c. GRUPPE -M 245346.- CLASS 31c. GROUP

Patentiert im Deutschen Reiche vom 15. Januar 1910 ab.Patented in the German Empire on January 15, 1910.

Die Erfindung bezieht sich auf eine selbstschließende Zange beliebiger Ausführung, welche zum Festhalten der Blockformen während des Ausstoßens der Blöcke dienen soll. Auch kann sie zum Einsetzen von Blöcken benutzt werden. Der Schwerpunkt der Erfindung liegt darin, . daß eine gewöhnliche, leichte, selbstschließende Blockzange derart mit einem Ausstoßstempel verbunden ist, daß diese Zange als selbstschließende Blockzange mit bekannten einfachen Mitteln gesteuert werden kann, wobei nur das Gewicht der Zange selbst zu berücksichtigen ist, ohne daß der Ausstoßstempel und somit das Ausstoßwerk in Bewegung gesetzt zu werden brauchen.The invention relates to a self-closing one Pliers of any type, which are intended to hold the block shapes in place while the blocks are being ejected. Also can they are used to insert blocks. The focus of the invention is . that an ordinary, light, self-closing block pliers with an ejector is connected that these pliers as a self-closing block pliers with known simple Means can be controlled, only taking into account the weight of the pliers themselves is without the ejector and thus the ejector being set in motion to need.

Bei den bisher bekannt gewordenen Ausstoßzangen wird das öffnen und Schließen der Zange entweder durch Heben ,und Senken des Ausstoßstempels bewirkt, oder es sind zwei be-In the previously known ejector pliers, the opening and closing of the Forceps either by lifting or lowering the Ejection ram causes, or there are two loading

ao sondere Rahmen erforderlich, welche beim Bewegen der Zange eine Bewegung gegeneinander ausführen. .ao special frame required, which when moving the pliers a movement against each other carry out. .

Im ersteren Falle muß also beim jedesmaligen Greifen oder Absetzen des Blockes oder der Blockform das Ausstoßwerk in Bewegung gesetzt werden, d. h. soviel mal die Zange geöffnet oder geschlossen wird, so oft muß eier Ausstoßmotor eingeschaltet werden. Bei der Erfindung wird die Zange, nachdem sie in die richtige Höhenlage gebracht ist, in derselben Weise wie die einfachen Blockzangen bewegt. Das Einschalten des Ausstoßmotors beschränkt sich also auf die wenigen Fälle, in welchen nach dem Anheben der Blockform der Block nicht von selbst herausfällt. Die Zahl der Schaltungen für das Ausstoßwerk beträgt schätzungsweise nur 1/30 bis'ι/50 derjenigen Schaltungszahl, welche erforderlich wäre, wenn das Ausstoßwerk zur Betätigung der Zange benutzt würde. Hieraus ergeben sich folgende Vorteile:In the first case, it must be done every time Gripping or setting down the block or the block form sets the ejector in motion be, d. H. as many times the tongs are opened or closed, as often as an ejector motor has to be used be switched on. In the invention, the pliers after they are in the correct height is brought, moved in the same way as the simple block tongs. Switching on of the exhaust motor is limited to the few cases in which after lifting the block shape does not fall out by itself. The number of circuits for the The ejection mechanism is estimated to be only 1/30 to 1/50 of the number of switching operations that are required would be if the ejector were used to operate the pliers. This has the following advantages:

1. Geringer Verschleiß am Ausstoß werk.1. Little wear and tear on the ejector mechanism.

2. Geringer Verschleiß an Kontroller und Motor.2. Little wear on the controller and motor.

3. Geringer Kraftverbrauch.3. Low power consumption.

4. Größere Leistung des Kranes infolge schnelleren Arbeitens der Zange, da die Zeit, welche sonst zum öffnen und Schließen der Zange infolge des sich verhältnismäßig langsam bewegenden Ausstoßstempels notwendig ist, fortfällt. ■4. Greater performance of the crane due to faster working of the tongs, since the time which otherwise to open and close the pliers as a result of being relatively slow moving ejector is necessary, is omitted. ■

Im zweiten Falle erfolgt zwar das Öffnen und Schließen der Zange ohne Einwirken des Ausstoßstempels, jedoch sind hierbei, wie schon erwähnt, zwei besondere Rahmen, ein innerer und ein äußerer, erforderlich; entweder muß der innere, da er das ganze Ausstoßwerk trägt, durch große Gegengewichte ausgewogen werden, oder es ist eine schwere Reibungskupplung in das Hubwerk einzubauen, welche so eingestellt sein muß, daß sie den inneren Rahmen mit dem Ausstoßwerk zu tragen imstande ist. Soll nun beispielsweise die Zange geöffnet werden, so muß der ganze innere Rahmen mit Ausstoßwerk festgehalten werden, während das Hubwerk die Senkbewegung ausführt. Es sind also große Massen abzubremsen, während bei der Erfindung wie bei jeder Blockzange nur das Eigengewicht der Zange zu berücksichtigen ist.In the second case, the tongs are opened and closed without the action of the ejector, however, as already mentioned, this requires two special frames, an inner and an outer; either must the inner one, as it carries the entire ejection mechanism, is balanced by large counterweights, or a heavy friction clutch is to be installed in the hoist, which is adjusted in this way must be that it is able to carry the inner frame with the ejector. Intended to now, for example, the pliers are opened, the entire inner frame with ejector be held while the hoist executes the lowering movement. So there are to slow down large masses, while with the invention, as with every block tong, only that The dead weight of the pliers must be taken into account.

Claims

In comparison to this, the invention has the following advantages:

1. Lower weight of the lifted dead load and lowered part and thus conditional

2. lower power consumption.

3. Greater controllability because only the weight of the lightweight pliers is taken into account is.

4. Lower acquisition costs because only a simple frame is required and that Hoist does not have additional brakes and friction clutches or large counterweights is equipped.

.15

5. Time savings when moving the pliers because of the large masses involved in steering fall away.

On the drawing, an embodiment of the subject matter of the invention is shown in Figures 1 to 3. It denotes: α the pliers legs which are rotatably mounted about the bolts i attached to the cross member d. The upper ends of the pliers legs are through the pull tabs b with the center piece c in Veras bond. This is displaceable on the ejector g. To hold the block or the block shape, the center piece c is raised by the ejector g , so that the carrier d of. his support m is lifted. The opening and closing of the pliers is then effected by raising and lowering the carrier d by means of the control means f . The pliers act as self-closing, ie block pliers that close due to the weight of the block. Once the block shape has been gripped and the block must be pushed out, if it does not fall out by itself, the ejector ram is lowered and at the same time the carrier d is lowered again until its lateral attachments e rest on the supports m of the pliers head h . After the punch has been lowered to the block, the ejection then takes place, the ejection pressure being transmitted through the lower pliers legs a and the lugs e of the carrier d to the projections m of the housing h , and thereby the ejection pressure is harmless to the self-closing action of the pliers is made. Of course, the invention is not restricted to the exemplary embodiment. It can be solved in various ways while maintaining the work process, z. B. in that the self-closing pliers is replaced by any shape of its type, of course, instead of the means of the pull cords indicated here for their movement f, any other corresponding type of pliers can be used.

In the drawing, the pliers are shown in Figures 1 to 3 in the various working positions. Fig. 1 shows the pliers with the block raised, the middle piece e being held in the highest position by the ejector, as described above. At the same time, the carrier d is released by slackening the cords f , so that, as a result of the leverage of the pull tabs b, the pliers tips are pressed against the block and the pliers are closed by the weight of the block. Since the lugs e of the carrier d do not rest in this position, the self-closing effect of the pliers is not impaired by anything. Figure 2 shows the tongs how the block is to be ejected. The approaches e of the carrier d have placed themselves on the projections m of the housing h , whereby the closing effect of the pliers is canceled. The ejector is lowered down to the block.

3 shows the pliers in the open position for gripping, the center piece e being held in the highest position by the head k of the ejector g and the pliers legs being spread apart by lifting the carrier d by means of the cords f.

In addition to the various designs mentioned above, the pliers themselves can of course also holding or adjusting them for the various working positions in others Way than done by the ejector, for example by similar pull cords, as those for controlling the pliers are assumed in the exemplary embodiment.

Pate ν t-An s PRu c η:

By the block weight, closing tongs in connection with the ejector for holding the block shape and for ejecting the block, characterized in that the tongs (a, d, b) are lifted by the ejector from a support (m) so that they then from their control means (f) can be controlled as self-closing pliers.

1 sheet of drawings.