IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0246018
(1981-03-20)
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우선권정보 |
DE-0010894 (1980-03-21) |
발명자
/ 주소 |
- Hillers, Franz-Josef
- Berentsen, Heinz
- Jager, Norbert
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출원인 / 주소 |
- M.A.N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
3 인용 특허 :
1 |
초록
▼
An electrode holder is disclosed particularly for smelting furnaces which comprises an electrode arm, a fixed contact to the arm and a movable contact movably mounted to the arm. A biasing spring is connected in the mounting of the movable contact on the electrode arm to bias the movable contact tow
An electrode holder is disclosed particularly for smelting furnaces which comprises an electrode arm, a fixed contact to the arm and a movable contact movably mounted to the arm. A biasing spring is connected in the mounting of the movable contact on the electrode arm to bias the movable contact toward the fixed contact to hold an electrode between the two contacts. A fluid pressure cylinder is provided in the electrode arm which acts on the movable contact to counteract the force of the spring to release the electrode from between the contacts. The fluid pressure cylinder is supplied by a fluid motor, fluid pump and fluid reservoir combination which is mounted as a constructional unit within the electrode arm. The fluid may be hydraulic or pneumatic. Electrical power is supplied to the motor by an electric line and air is supplied to a compartment containing the motor pump and reservoir combination. Flexible pressure fluid lines are therefore not required.
대표청구항
▼
1. In an electrode holder including, an electrode arm, a fixed contact connected to an end of said arm, a movable electrode jaw movably mounted to said arm and having a clamping contact, and biasing spring means connected to the electrode jaw for moving the clamping contact toward the fixed contact
1. In an electrode holder including, an electrode arm, a fixed contact connected to an end of said arm, a movable electrode jaw movably mounted to said arm and having a clamping contact, and biasing spring means connected to the electrode jaw for moving the clamping contact toward the fixed contact to clamp an electrode therebetween, the improvement comprising: fluid pressure means in said arm and connected to said electrode jaw for acting to counter the force of said biasing means when fluid under pressure is supplied to said fluid pressure means; and fluid motor means mounted as a unit in said arm and connected to said fluid pressure means for supplying fluid under pressure to said fluid pressure means whereby an electrode can be released from between said fixed and clamping contacts. 2. The improvement of claim 1, wherein said fluid pressure means comprises a piston-cylinder combination connected to said electrode jaw, said fluid motor means comprising an electric motor, a pump connected to said electric motor, a reservoir for containing fluid connected to said pump and a connecting tube connected between said reservoir and pump and said cylinder piston combination, said motor, pump and reservoir mounted as a unit in said electrode arm. 3. An improvement according to claim 2, including elastic mounting means connected between said motor, pump and reservoir unit and said electrode arm. 4. An improvement according to claim 2, including at least two bulkheads in said electrode arm defining a shielded compartment in said electrode arm, said motor, pump and reservoir unit mounted in said shielded compartment. 5. An improvement according to claim 2, wherein said cylinder-piston combination is supplied with hydraulic fluid, said connecting tube comprising a flexible hydraulic line connected between said pump and said hydraulic cylinder-piston combination. 6. An improvement according to claim 2, wherein said cylinder and piston combination receives pneumatic fluid, said connecting tube comprising a flexible pneumatic tube connected between said reservoir which contains pneumatic fluid and said pneumatic cylinder and piston combination. 7. The improvement according to claim 2, wherein said electrode arm includes means defining a compartment which is lined with non-magnetic and dielectric material for shielding said compartment, said motor, pump and reservoir unit mounted in said compartment, and an elastic member connected between said motor, pump and reservoir unit and said means defining said compartment for absorbing and insulating the vibrations of said electrode arm. 8. An improvement according to claim 7, including an opening through said electrode arm communicating with said compartment and a cover member over said opening covering said compartment. 9. An improvement according to claim 8, wherein said cover includes a chamber for receiving coolant for cooling said cover. 10. An improvement according to claim 2, including a forked arm connected to said electrode jaw slidably mounted in said electrode arm, a connecting rod connected between a piston of said cylinder and piston combination and said forked arm, a bulkhead in said electrode slidably receiving said connecting rod, a ring connected to said connecting rod, said biasing spring means comprising a pretensioned compression spring mounted between said ring and said bulkhead for biasing said electrode jaw toward said fixed contact. 11. An improvement according to claim 4, wherein one of said bulkheads has an opening therein, and an air tube connected to said opening for supplying said compartment with air.
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