JPH0341882Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a link type dummy bar for continuous casting, which is characterized by a dummy bar head attachment/detachment mechanism.

(Prior Art) Conventionally, a dummy bar head is rotatably engaged with the tip of a dummy bar combination in both directions or in one direction, and is connected by a connecting pin, similar to the method of connecting each link in a dummy bar combination.

(Problem that the invention aims to solve) However, since the dummy bar head was attached to and removed from the tip of the dummy bar combination by removing or inserting the connecting pin, the dummy bar head replacement work was inefficient, and it was extremely difficult to automate and save labor. There was an inconvenience.

(Means for Solving the Problems) The link type dummy bar of the present invention has a dummy bar head and a dummy bar combination with connecting protrusions that can come into contact with each other in the connecting direction, and the distal end of one of the connecting protrusions has a A locking protrusion having a guide surface that is inclined to gradually narrow the locking protrusion is provided, and a plurality of lock levers biased with a closing force that are pressed against the side surface of the one coupling protrusion are pivoted to the side of the other coupling protrusion. and between the other connecting protrusion and the lock lever,
An adjustment screw is provided to define the opening/closing limit of the lock lever, and the lock lever is formed so as to be able to engage with the locking protrusion with the distal ends of the coupling protrusions facing each other, and a center hole is formed in the distal end surface of one of the coupling protrusions. The dummy bar head is characterized by having a center pivot provided on the tip surface of the other connecting protrusion, which is provided with a spring-loaded center pivot, and this mechanical configuration makes it possible to quickly attach and detach the dummy bar head. be.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a link type dummy bar, which is composed of a dummy bar common body 2 to which a large number of links are rotatably attached in either direction or one direction, and a dummy bar head 3 attached to the tip of the common body 2 by an attachment/detachment mechanism described later. ing.

The dummy bar common body 2 and the dummy bar head 3 are provided with corresponding connecting protrusions 4 and 5 (rectangular in the embodiment) having a rectangular or circular cross section.

One connecting protrusion (dummy bar head 3 in the example)
At the tip of the side connecting protrusion 4), there is a locking protrusion 7 having a guide surface 6 inclined so as to gradually narrow the tip side.
is provided, and a center hole 8 is bored in the distal end surface.

The other connecting protrusion (in the example, the dummy bar combination body 2
A plurality of lock levers 9 (two in the embodiment) that can be pressed against the side surface of the one connecting projection 4 are rotatably pivoted by a pin 11 via a bracket 10 on the side of the side connecting projection 5). A center pivot 13 is provided on the distal end surface, and is resiliently supported by a spring 12 and can be moved freely.

The lock lever 9 is biased by a closing force via a pressing metal fitting 15 by a spring 14 built into the base end of the connecting protrusion 5, and the closing limit position is adjusted by an adjustment screw 16 attached to the base end of the connecting protrusion 5. It is set. On the opposite surface of the tip of this lock lever 9,
Locking protrusion 1 having a guide surface 17 on the lever tip side
8 is provided, and can be engaged with the locking protrusion 7 with the connecting protrusions 4 and 5 facing each other.

(Function) When the connecting protrusion 4 provided on the dummy bar head 3 is pushed between the lock levers 9, the guide surfaces 6, 1
7 first come into sliding contact, and as the lock lever 9, which is biased by the closing force, is opened by the wedge action of the guide surface 6, the connecting protrusions 4 and 5 approach each other, and finally the tips of the connecting protrusions 4 and 5 are brought into contact with each other in the center hole. 8 and the center pivot 13 are fitted together to face each other in a centered state, and
By engaging the locking protrusions 7 and 18, the dummy bar head 3 is attached to the tip of the dummy bar common body 2 in a centered state.

On the other hand, when the base end of the lock lever 9 is held between the clamp rolls 19 and the like and the lock lever 9 is opened by overcoming the closing force, the engagement between the locking protrusions 7 and 18 is released, and if the dummy bar head is then moved back, Dummy bar head 3 is removed from dummy bar union 2.

(Effects of the invention) As described above, according to the invention, the dummy bar head can be mechanically attached to the tip of the dummy bar combination by simply pushing it in, and the dummy bar head can be removed from the tip of the dummy bar combination by simply opening the lock lever. Since the dummy head can be quickly attached and detached, the efficiency of the dummy head replacement work can be improved, and the work can be automated (labor saving).

In addition, a lock lever provided on the connecting protrusion of the dummy bar head (or the dummy bar common body) is connected to a lock lever provided on the connecting protrusion of the dummy bar head (or the dummy bar common body) so that the end surfaces of the connecting protrusions provided on the dummy bar head and the dummy bar common body are in contact with each other. When engaging with the stop projection, a center hole is provided on the tip surface of one of the connecting protrusions and a center pivot is provided on the tip surface of the other connecting protrusion, and these are fitted together, so the centering state of the dummy bar head with respect to the dummy bar common body is In addition, the center pivot strongly prevents the relative movement of the dummy bar combination body and the dummy bar head to the side (misalignment between the two) even if one of the lock levers is subjected to a pressing force due to the meandering of the dummy bar. ,
The adjustment screw that defines the opening/closing limit of the lock lever allows the lock lever to engage and hold the locking protrusion of the connecting protrusion by a certain amount of engagement or more, which prevents an unexpected accident in which the dummy bar head comes off from the dummy bar common body, resulting in safe casting. Operation can be planned.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention in cross section of a main part, and FIG. 2 is a side view of the same. DESCRIPTION OF SYMBOLS 1... Link type dummy bar, 2... Dummy bar common body, 3... Dummy bar head, 4, 5... Connection projection, 6, 17... Guide surface, 7, 18... Locking projection, 8... Center hole, 9... Lock lever, 10
...Bracket, 11...Pin, 12, 14...
Spring, 13...Center pivot, 15...Press fitting, 16...Adjustment screw.

Claims (1)

[Scope of utility model registration request] The dummy bar head and the dummy bar combination are provided with connecting protrusions that can come into contact with each other in the connecting direction, and the distal end of one of the connecting protrusions is provided with a locking protrusion that has a guide surface that is sloped so as to gradually narrow the distal end side, A plurality of lock levers each having a closing force that is pressed against the side surface of the one connecting protrusion are pivotally attached to the side of the other connecting protrusion, and a lock lever is provided between the other connecting protrusion and the lock lever to open and close the lock lever. An adjustment screw is provided to define the limit, and the lock lever is formed so as to be able to engage with the locking protrusion with the distal end surfaces of the connecting protrusions facing each other, and a center hole is bored in the distal end surface of one of the connecting protrusions. A link-type dummy bar characterized in that the other connecting projection has a center pivot provided on the distal end surface thereof, and the center pivot is provided with a spring-loaded center pivot.