JPH024772Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention is a lid for a molten metal ladle for opening and closing the lid of a ladle for storing and transporting molten metal such as hot metal or molten steel, which is mounted on a cart. This relates to opening/closing devices.

[Prior art and its problems]

For example, in a steelworks, discharged from a blast furnace,
The hot metal flowing through the tap runner is stored in a hot metal ladle 2' mounted on a cart 1' as shown in FIG. 3, and transported to the next process. Recently, dephosphorization and
Out-of-furnace refining such as desulfurization has become more common, and the time that hot metal is stored in the hot metal ladle 2' has become longer.
Further, in order to prevent the temperature of the refractory material lining the pot from dropping when the pot is empty, the hot metal pot 2' is often covered with a lid 6'.

Conventionally, the attachment and detachment of the lid 6' to and from the hot metal pot 2' has been carried out using a crane, etc., requiring crane equipment, and as the number of attachments and detachments of the lid 6' increases, crane operations There were problems such as deterioration of sex.

[Purpose of invention]

Therefore, the object of this invention is to provide a lid attachment/detachment device for a molten metal ladle mounted on a trolley, which can easily attach and detach the lid to a molten metal container such as a hot metal ladle without requiring a crane or the like. It is something.

[Summary of the idea]

The device of this invention is a device for opening and closing the lid of a pot for storing and transporting molten metal, which is mounted on a cart, the base end of which is pivoted on the cart, and the tip of the pot that is mounted on a cart to accommodate and transport molten metal. an arm rotatable about the base end pivotably attached to the lower surface of one end; and the arm having the base end pivotably attached to the trolley and the rod tip pivotably attached to the intermediate portion of the arm. a cylinder for attaching and detaching the lid from the opening surface of the pot by rotation; It is characterized in that it consists of a cylinder for refraction with the axial attachment point as an axis.

[Structure of the idea]

Next, this invention will be explained with reference to the drawings. FIG. 1 is a front view showing an embodiment of the device of this invention, and FIG. 2 is a plan view thereof.

A hot metal ladle 2 for storing hot metal, for example, is mounted on a truck 1. The hot metal ladle 2 has an outer shell made of steel plate, and the inner surface thereof is lined with a refractory material. At symmetrical positions on both sides of the outer shell, there are hanging hands 3 for lifting the hot metal pot.
a, 3b are provided, and a hot metal outlet 4 is provided on one side near the upper edge of the hot metal ladle 2. The truck 1 is provided with a support 5 for laterally supporting the lower part of the hot metal ladle 2.

A lid 6 covering the upper opening of the hot metal ladle 2 is made up of square lid pieces 6a and 6b divided into left and right halves, and a fireproof heat insulating material is attached to the lower surface of the lid 6.

At both ends of the outer lower surface of each of the lid pieces 6a and 6b constituting the lid 6, the tips of arms 7a and 7b whose base ends are pivoted on the pedestal 8 of the cart 1 by horizontal pins 12a and 12b are attached. , horizontal pins 13a, 13b
It is pivoted by.

Lid pieces 6a, 6 are provided on the outside of the pivoting position of the arms 7a, b of the base 8 via the arms 7a, 7b.
The proximal ends of the first cylinders 9a and 9b for rotating the cylinder b are pivoted. First cylinder 9a, 9b
The tips of each of the rods 9a' and 9b' are connected to the arm 7.
It is pivoted to the middle part of a and 7b.

On the other hand, the bases of second cylinders 10a, 10b are pivoted to brackets 11a, 11b provided at the bottom of arms 7a, 7b so as to protrude inwardly, and each of the rods 10a', 10b' The tips of the arms 7a and 7 are located on the lower surfaces of the lid pieces 6a and 6b.
It is pivoted at a position inside the pivot point b.

First cylinder 9a, 9b and second cylinder 1
0a, 10b may be electric, hydraulic, or pneumatic.

Next, the operation of this device will be explained. 1st
As shown by the solid line in the figure, the lid piece 6 that constitutes the lid 6
When the first cylinders 9a, 9b are actuated to contract the rods 9a', 9b' from the state where the upper opening of the hot metal ladle 2 is covered by the arms 7a, 6b, the arms 7a, 7b are moved to the pedestal. Pin 12 pivoted on 8
It rotates around a and 12b.

As a result, the lid pieces 6a, 6b are separated from the upper opening of the hot metal ladle 2 and rotated as shown by the arrows.
Reach position A′. Next, the second cylinder 10a,
When the rods 10a' and 10b' are contracted by actuating the rods 10b, the lid pieces 6a and 6b are moved by the arms 7a and 10b.
The tip of 7b is bent about pins 13a and 13b, which are pivoted, as shown by the arrows, and reaches positions B and B'.

Therefore, the upper part of the hot metal ladle 2 can be opened without being obstructed by the lid pieces 6a and 6b, and the hot metal ladle 2 can be smoothly loaded into the hot metal ladle 2 and the hot metal ladle 2 can be lifted and suspended from the cart 1. Can be done.

After receiving the pig iron, when covering the opening of the hot metal ladle 2, the rods 10a', 10b' of the second cylinders 10a, 10b are extended to cover the lid pieces 6a, 6b by the operation opposite to the above.
After rotating the rods 9a', 9 of the first cylinders 9a, 9b from the positions B, B' to the positions A, A',
By extending b', the lid pieces 6a, 6b are moved over the opening of the hot metal ladle 2. Next, by appropriately operating the first cylinders 9a, 9b and the second cylinders 10a, 10b, the lid pieces 6a, 6b are brought into close contact with the openings of the hot metal ladle 2, and the openings are closed by the lid pieces 6a, 6b.
completely covered by.

In the above description, the lid 6 does not necessarily need to be divided into two parts, and may be integrated. In this case, the arm, the first cylinder, the second cylinder, etc. may be provided only on one side of the hot metal ladle 2.

[Effect of idea]

As mentioned above, according to the device of this invention,
For example, the lid of a pot containing molten metal such as hot metal can be easily and quickly attached and removed without the need for a crane, etc. Therefore, the lid of a pot containing molten metal such as hot metal can be easily and quickly removed. Excellent effects such as being able to prevent the temperature drop of the refractory material lining the pot during cooking are brought about.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of the device of this invention, FIG. 2 is a plan view thereof, and FIG. 3 is a schematic front view of the conventional device. In the drawings 1... Trolley, 2... Hot metal pot, 3a, 3b... Hanging hand, 4
...Hot metal outlet, 5...Support, 6...Lid, 6a, 6
b... Lid piece, 7a, 7b... Arm, 8... Pedestal, 9
a, 9b...first cylinder, 10a, 10b...second cylinder
Cylinder, 11a, 11b...Bracket, 12
a, 12b, 13a, 13b...pin.

Claims (1)

[Scope of utility model registration request] A device for opening and closing the lid of a pot mounted on a trolley for storing and transporting molten metal, the base end of which is pivoted on the trolley, and the tip of the pot pivoted on the lower surface of one end of the pot. an arm rotatable about the base end thereof, the base end being pivoted on the trolley;
a rod tip is pivoted to the intermediate portion of the arm;
a cylinder for attaching and detaching the lid from the opening surface of the pot by rotation of the arm, a base end of the cylinder being pivotally attached to the inside of the arm, and a rod tip being pivotally attached to the lower surface of the lid; and a cylinder for bending the arm about the pivot point thereof.