JPS5851193B2 - Ingot material charging device to melting furnace - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for charging ingot material into a melting furnace, which charges materials to be melted such as ingots into the melting furnace in the form of bundles.

Conventionally, ingot materials have been introduced into light metal melting furnaces by manual input, by transporting packets, and continuously by conveyor, but all of these methods involve throwing ingots from the top of the tower, resulting in a large input head. The impact caused damage to the lining refractories of the hearth and side walls, shortening the life of the melting furnace.

In addition, conventionally, it took a long time to charge the ingot material into the melting furnace, which caused a large amount of heat to be released from the charging port, leading to a loss of thermal energy, and the time required for one melting cycle increased, resulting in a decrease in operational efficiency. There were problems such as.

This invention was proposed to solve the above-mentioned conventional problems.

An embodiment of an apparatus for charging ingot material into a melting furnace according to the present invention will be described based on the drawings.

Reference numeral 1 denotes a cylindrical suspension frame, which is suspended via a wire 5 from a hoist crane 4 that runs along a hoist rail 3 installed above a melting furnace 2 .

A support member 6 faces each other at the inner lower end of the hanging frame 1 and is rotatably attached via a pivot 6a.A lifting rod 7 is attached to the vertical bearing 9 provided in the inner frame 8 at the center of the upper part of the hanging frame 1. It is fitted and arranged so that it can move up and down.

Reference numeral 10 denotes an arm disposed in the center, the base end of which is fixed to the camshaft 11 via a boss 12, and the tip end connected to the lifting rod 7.
It is connected via a pin 13 to a horizontally elongated groove provided at the upper end of the holder.

The camshaft 11 has bearings 14,1 provided at both ends in the inner frame 8.
4, and fan-shaped winding cams 16 each having a locking step 15 on the outer periphery are fixed to both ends thereof.

Reference numeral 17 denotes a chain, the upper end 17a of which is fixed to the outer periphery of the winding cam 16, and the lower end branched into two chains 18, 1B via a branching tool 17b. It is connected to the support member 6 via a supported chain wheel 19.

Reference numeral 20 denotes a lever-like locking member, which is attached to the inner frame 8 near the winding cam 16.
A roller 22 pivoted at one end of the tag slides on the outer periphery of the winding cam 16 and can be engaged with and detached from the locking step 15, and the other end is attached to the hanging frame. 1
It is connected via a connector 24 to an electromagnetic actuating member 23 fixed to.

Further, a coil spring 25 is attached to the other end of the locking member 20 in tension between it and the inner frame 8.

On the other hand, the hoist crane 4 is provided with a traveling limit switch 27 that stops the traveling motor above the melting furnace 2 and rotates the lifting motor 26 downward. When the load on the lift motor 5 becomes light, a weight tier car 28 is provided which detects a load current flowing through the lift motor 26 that is less than a set value and causes the lift motor 26 to stop descending and the electromagnetic actuating member 23 to operate. It is being

The weight lifter car 28 has a built-in timer 28a that operates after a predetermined period of time has elapsed, so that the lifting motor 26 can be rotated up and down, and an electric opening/closing device 32 and a burner control device 30, which will be described later, can be operated via an electric control device 33. I can do it.

A burner 29 is provided at the bottom of the melting furnace 2, and is equipped with a burner control device 30 that can electrically and automatically adjust the combustion state.

31 is a charging door equipped with an electric opening/closing device 32.

Electrical wiring 33a is provided between the electric control device 33 and the lifting motor 26, and the electric wiring 33a
An electric wiring 33b is provided between the electric control device 33 and the limit switch 27, an electric wiring 33c is provided between the electric control device 33 and the weight hierarchy car 28, and an electric wiring 33c is provided between the electric control device 33 and the burner control device 30. is provided with electrical wiring 33d, and an electrical control device 33
An electric wiring 33e is provided between the electric opening/closing device 32 and the electric opening/closing device 32, and an electric wiring 33f is provided between the electric control device 33 and the travel motor 36 of the hoist crane 4.

34 is an exhaust flue, and 35 is a bundled ingot material.

The operation of the ingot material charging device will be explained.

First, as shown in FIG. 2, when the hanging frame 1 is moved directly above the bundle-shaped ingot material 35 placed on the table A and lowered to the state of a temporary line, the lower end of the lifting rod 7 hits the ingot material 35 and the hanging frame 1, the arm 10 rotates the winding cam 16 clockwise in FIG. 2 via the camshaft 11.

As a result, the chain 17 whose upper end is attached to the winding cam 16 pulls up the support member 6 through the branching tool 17b and the chain 18 to bring it into a horizontal state, and the chain that had been in sliding contact with the outer periphery of the winding cam 16 until then is removed. The roller 22 of the stop member 20 is connected to the winding cam 16
The support member 6 in the horizontal state securely holds the ingot material 35 by engaging with the locking step 15 of the support member 6 .

The hanging frame 1 is attached to a wire 5 by a hoist crane 4.
When it is hoisted up and transferred directly above the melting furnace 2, the limit switch 27 is activated and the hoist crane 4 is stopped.

At the same time, the electric opening/closing device 32 is activated by a signal from the limit switch 27 to open the charging door 31, and the burner control device 30 is activated to bring the burner 29 into the minimum combustion state. Frame 1
descends.

The ingot material 35 into which the legs of the hanging frame 1 have been charged
When the load on the wire 5 decreases and the load current on the lifting motor 26 decreases to below the set value, the weight lifter car 28 is activated and the electric control device 33
The lifting motor 26 is stopped via the electromagnetic actuating member 23, and the electromagnetic actuating member 23 is energized to rotate the locking member 20 counterclockwise in FIG. 2 against the tensile force of the coil spring 25.

Therefore, the roller 22 is disengaged from the locking step 15, the winding cam 16 is unlocked, and the ingot material 35 pushes down the support member 6 due to gravity and falls into the melting furnace 2.

After the weight tierer car 28 starts operating, an appropriate timer 28a built therein operates, and after the ingot material 35 falls off, the lifting motor 26 rotates upward, and the hanging frame 1 is lifted from the melting furnace 2. , the electric opening/closing device 32 is activated to close the charging door 31, and at the same time, the burner control device 30 is activated to bring the burner 29 into the maximum combustion state.

As described above, the device for charging ingot material into a melting furnace according to the present invention has supporting members 6, 6 rotatably mounted opposite to each other at the inner lower end of the hanging frame 1, and at the upper center of the hanging frame 1. A lifting rod 7 is arranged so as to be movable up and down, and the upper end of the lifting rod 7 is connected to the hanging frame 1.
The camshaft 11 is connected to the distal end of an arm 10 whose base end is fixed to the camshaft 11 which is pivotally supported on the upper part of the arm 10.
A winding cam 16 having a locking step 15 is fixed to the winding cam 16, one end of a chain 17 is fixed to the winding cam 16, and the other end of a chain 18 branched into two strips from the chain wheel 17 is connected to a chain wheel 19. is fixed to the support member 6 via the winding cam 1.
A locking member 20 having one end slidably in contact with the outer periphery of the locking member 6 is pivotally supported beside the locking member 6, and the other end of the locking member 20 is connected to an electromagnetic actuating member 23 fixed to the hanging frame 1. A limit switch 27 that stops the hoist crane 4 above the melting furnace 2 and rotates the lifting motor 26 downward, and a limit switch 27 that stops the hoist crane 4 above the melting furnace 2 and rotates the lifting motor 26 downward. When the frame 1 is on the ground, a sudden decrease in the load current of the lifting motor 26 due to the lightening of the load on the wire 5 is detected, and the lowering rotation of the lifting motor 26 is stopped and the electromagnetic actuating member 23 is released. In addition, a weight tierer car 28 is provided with a built-in timer 28a to rotate the elevating motor 26 upward after a certain period of time, and a hoist crane traveling upper 2-ter 36, an elevating motor 26, a limit switch 27, a weight tierer car 28, and a melting furnace are installed. 2 burner control device 3
0. The electric opening/closing device 32 for the charging door 31 of the melting furnace 2 is electrically connected via the electric control device 33 so that the burner 29 is in the minimum combustion state when the charging door 31 is opened. It is composed of

Therefore, according to the present invention, the ingot material 35 is automatically transported and charged into the melting furnace 2 by the ingot material charging device, and when the ingot material 35 is landed in the melting furnace 2, it is inserted into the hanging frame 1. Since it falls off, the charging head is small and there is no damage to the inside of the furnace due to impact.

In addition, when inserting and removing the hanging frame 1 into and out of the melting furnace 2, the charging door 31
The melting furnace 2 can be opened and closed automatically without waiting time, reducing the opening time of the melting furnace 2, and since the combustion of the burner is automatically adjusted, the amount of heat radiated is reduced and energy can be saved.

Furthermore, since the time required for one melting cycle is shortened, operational efficiency is improved.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the apparatus for charging ingot material into a melting furnace according to the present invention, and FIG. 1 is an overall explanatory view, FIG. 2 is a vertical sectional view of the main part, and FIG. 2 is a partially omitted plan view of FIG. 2. FIG. 1... Hanging frame, 2... Melting furnace, 3...
... Hoist rail, 4 ... Hoist crane, 5 ... Wire 6 ... Support member,
7... Lifting rod, 10... Arm, 11
...Camshaft, 15...Lock step, 16... Winding cam, 17... Cheno, 18... Cheno, 19...Chain wheel, 2
0...Locking member, 20a...Pivot, 2
3... Electromagnetic actuation member, 26... Lifting motor, 27... Limit switch, 28...
... Weight tier car, 28a ... Timer, 30 ... Burner control device, 32 ...
...Electric opening/closing device, 33...75...Electric control device, 36...Hoist crane travel motor.

Claims (1)

[Claims] 1. A support member 6 is rotatably mounted opposite to each other at the inner lower end of the hanging frame 1, and an elevating rod 7 is disposed at the center of the upper part of the hanging frame 1 so as to be movable up and down, and the upper end of the elevating rod 7 is The camshaft 11 is connected to the tip of an arm 10 whose base end is fixed to the camshaft 11 which is pivotally supported on the upper part of the hanging frame 1.
A winding cam 16 having a locking step 15 is fixed to the winding cam 16, and one end of a chino 17 is fixed to the winding cam 16, and a chino 18 is branched from the chino 17 into two. The other end of the bill winding cam 1 is fixed to the support member 6 via a chain wheel 19.
A locking member 20 with one end slidably in contact with the outer periphery of the locking member 20 is pivotally supported near the frame 6, and the other end of the locking member 20 is connected to an electromagnetic actuating member 23 fixed to the hanging frame 1. A limit switch 27 is attached to the hoist crane 4 which is suspended via a wire 5 and runs along the hoist rail 3, and which stops the hoist crane 4 above the melting furnace 2 and rotates the lifting motor 26 downward. When the hanging frame 1 is in a landing state, a sudden decrease in the load current of the lifting motor 26 due to the lightening of the load on the wire 5 is detected, and the lowering rotation of the lifting motor 26 is stopped and the electromagnetic actuating member 23 is released. After a certain period of time, the lifting motor 2
A weight lifter car 28 with a built-in timer 28a is provided to rotate the hoist crane 6 upwardly, and a hoist crane traveling motor 36, a lifting motor 26, and a limit switch 2 are installed.
7. Weight tier car 28, burner control device 30 for melting furnace 2, electric opening/closing device 32 for charging door 31 of melting furnace 2
An apparatus for charging ingot material into a melting furnace, characterized in that when the charging door 31 is opened, the burner 29 is in a minimum combustion state.