KR100913155B1 - Replacing equipment for electrode - Google Patents

Abstract

In order to provide an electrode replacement device for use in replacing a carbon electrode, the present invention includes a rod-shaped body; A clamp provided at an end of the main body and clamping an electrode; A cylinder which is provided in the main body and operates a clamp; A clamp switch for controlling the cylinder; A pneumatic motor provided in the main body and driven by pneumatic pressure; A motor switch controlling the motor; A chain coupled to the pneumatic motor, the chain having a crawler motion when the motor is driven; And a roller connected to the chain and rotating by the chain when the pneumatic motor is driven to rotate the electrode clamped to the clamp.

Furnace, Electrode, Replacement, Auto, Clamp, Pneumatic Motor

Description

Electrode Replacement Device {REPLACING EQUIPMENT FOR ELECTRODE}

1 is a view showing the appearance of an electrode replacement device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an internal configuration of FIG. 1. FIG.

3 is a view showing an electrode replacement device according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10 body 12 clamp

16: waist support 18: cylinder

20a, 20b, 20c: Roller 22a, 22b, 22c: Chain

24: power transmission gear 26: pneumatic motor

The present invention relates to a carbon electrode for generating an arc in an electric furnace and the like used in the steelmaking art, and more particularly to an electrode replacement device used to replace the carbon electrode.

In general, in the field of steelmaking technology, an electric furnace used for manufacturing steel or alloy using scrap metal is a furnace for manufacturing steel by using heat transfer, and a three-phase carbon electrode rod, which is an electrical conductor, is immersed in molten steel, Molten steel is produced by dissolving scrap iron by the generated arc heat.

However, since the carbon electrode is a consumable part, when the carbon electrode becomes smaller than a predetermined length, the carbon electrode needs to be replaced with a new electrode. In addition, all the work must be stopped when replacing the electrode, so as to reduce the time consumed in the replacement as much as possible so as not to reduce productivity.

Thus, referring to the electrode replacement process described above, conventionally, a new electrode using a crane is positioned directly above the electrode to be replaced, two workers in a pair of electrodes manually using a clamp-type rotating mechanism. Replaced. In other words, male and female screw grooves are provided at both ends of the electrode, and the worker replaces the electrode by screwing the clamp-type rotating mechanism manually to replace the new electrode.

However, since the electrode has a diameter and a length of approximately 500mm and 1800mm, respectively, and one weight exceeds 600kg, manual replacement by an operator is not easy, and the electrode replacement is performed at a high position. There was a problem of a safety accident.

The present invention was devised to solve the above problems, and an object thereof is to provide an electrode rod replacement device having improved working efficiency.

In order to achieve the above object, the present invention,

A rod-shaped body;

A clamp provided at an end of the main body and clamping an electrode;

A cylinder for operating the clamp and a clamp switch for operating the cylinder;

A pneumatic motor and a motor switch for controlling the motor;

A chain coupled to the pneumatic motor, the chain having a crawler motion when the motor is driven;

A roller connected to the chain, the roller being rotated by the chain when the pneumatic motor is driven to rotate the electrode rod clamped to the clamp;

It is achieved by the electrode replacement device comprising a.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show an electrode replacement device according to an embodiment of the present invention, Figure 1 is a view showing the appearance, Figure 2 is a view showing the internal configuration.

1 and 2 illustrate a portable replacement device, the replacement device of the present embodiment includes a rod-shaped main body 10, and the main body 10 includes a clamping means and an electrode rotation means.

First, the clamping means will be described. One end of the main body 10 is provided with a clamp 12 for clamping the electrode rod C, and the other end and the middle portion have a handle 14a for left hand and the left hand. A handle 14b is provided, and a streamlined waist support 16 is provided between the handles 14a and 14b.

In addition, a cylinder 18 is provided in the main body 10 to drive the clamp 12, and the main body 10 is electrically connected to the cylinder 18 to clamp the switch for controlling the driving of the cylinder 18. SW1 is provided. The cylinder 18 may be configured as a pneumatic cylinder, it is possible to obtain power from the air line provided in the steel mill using a compressed air cable (not shown).

According to the portable replacement device having the clamp 12, the cylinder 18, and the clamp switch SW1 having such a configuration, the electrode 12 can be reliably clamped by the clamp 12.

In addition, the means for rotating the electrode rod C clamped by the clamp 12 will be described. At the end of the clamp 12, rollers 20a and 20b made of rubber are provided, and the rollers 20a, The roller 20c is provided at the end of the main body 10 between the 20b, and the three rollers 20a, 20b, and 20c are connected to the power transmission by the chains 22a and 22b. In addition, the center roller 20c is connected to the power transmission gear 24 by a chain 22c, and the power transmission gear 24 is driven by the driving force of the pneumatic motor 26.

The pneumatic motor 26 is driven by the air line of the steel mill as in the case of the cylinder 18 described above, it is possible to obtain a high output of about 1 horsepower, even small, compared to the electric motor that produces the same output And light weight and low cost.

In addition, a motor switch SW2 is provided at an adjacent position of the clamp switch SW1 to control the pneumatic motor 26.                     

It describes the process of replacing the electrode using a replacement device of this configuration.

When a new electrode is positioned directly above the electrode to be replaced by the crane, the operator turns on the clamp switch SW1 to operate the cylinder 18.

In this way, the cylinder 18 is extended and the electrode C is clamped to the clamp 12. At this time, the three rollers (20a, 20b, 20c) is in close contact with the outer surface of the electrode (C).

In this state, when the motor switch SW2 is turned on to drive the pneumatic motor 26, the driving force of the motor 26 is provided at the center roller 20c and the clamp end by the power transmission gear 24 and the chain 22c. Since the three rollers 20a, 20b, and 20c are simultaneously transmitted to the rollers 20a and 20b, the electrode rod C in close contact with the rollers is rotated.

Therefore, a new electrode (C) is automatically screwed on the electrode to be replaced.

According to such a structure, there exists an effect which can improve work efficiency compared with the conventional case where two workers rotate the electrode rod directly manually.

Figure 3 shows an electrode replacement device according to another embodiment of the present invention. The present embodiment includes a main body 10 'made up of a vertical arm 10a capable of height adjustment and rotation, and a horizontal arm 10b installed on the vertical arm 10a and adjustable in length. The horizontal arm 10b is provided with clamping means and electrode rotating means as in the above-described embodiment.

Therefore, the electrode rod replacement device of the above configuration has the effect that can be remotely controlled by the operator.

As described above, the electrode replacement device according to the present invention can efficiently perform the electrode replacement operation in a short time by rotating the electrode rod by a pneumatic motor using the air line which is essentially provided in the steelmaking plant. Therefore, there is an effect that can minimize the decrease in productivity due to the suspension of operation during electrode replacement work.

Claims (3)

A rod-shaped body; A clamp provided at an end of the main body and clamping an electrode; A cylinder which is provided in the main body and operates the clamp; A clamp switch electrically connected to the cylinder to control operation of the cylinder; A pneumatic motor provided in the main body and driven by pneumatic pressure; A motor switch electrically connected to the pneumatic motor to control an operation of the pneumatic motor; A plurality of chains installed in the clamp, coupled to the pneumatic motor through a power transmission gear, and having a tracked motion by receiving power from the power transmission gear when the pneumatic motor is driven; A plurality of rollers connected to the plurality of chains, in contact with the electrode rods, and rotated by the plurality of chains when the pneumatic motor is driven to rotate the electrode rods; Electrode replacement device comprising a. The electrode replacement apparatus of claim 1, wherein the main body is provided with a handle and a waist support. The apparatus of claim 1, wherein the electrode replacement device further comprises a vertical arm capable of height adjustment and rotation, and a horizontal arm installed on the vertical arm and capable of length adjustment, wherein the main body is fixed to the horizontal arm. Electrode replacement device characterized in that the.

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