CN101844225B

CN101844225B - Clamping and fixing device for clamping long nozzle in ladle pouring system

Info

Publication number: CN101844225B
Application number: CN2010102088432A
Authority: CN
Inventors: 田陆; 李娟�; 曹令亚
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-13
Filing date: 2010-06-13
Publication date: 2012-05-30
Anticipated expiration: 2030-06-13
Also published as: CN101844225A

Abstract

The invention provides a clamping and fixing device for clamping a long nozzle in a ladle pouring system, which comprises a trunnion ring which is sheathed on the long nozzle and supports the long nozzle and a clamping block, wherein trunnion ring walls at the upper part and the lower part of the trunnion ring are respectively provided with a first through hole and a second through hole, and outer side of the trunnion ring is provided with a fixed support; and the clamping block can be rotatably hinged on the fixed support, and both ends of the clamping block respectively pass through the first through hole and the second through hole and extend along the radial direction of the trunnion ring. In the invention, the clamping block is added at the outer side of the trunnion ring, and both ends of the clamping block can be in contact with the outer wall of the long nozzle inserted in the trunnion ring through the through holes in the trunnion ring wall. When the long nozzle is inserted in the trunnion ring, the external surface of the long nozzle extrudes the upper end of the clamping block under the action of self gravity to rotate the clamping block; and when the long nozzle is completely inserted in the trunnion ring, the upper end and the lower end of the clamping block are in close contact with the outer wall of the long nozzle simultaneously to clamp and fix the long nozzle so as to prevent steel leakage at the joint of the long nozzle and a sliding plate as a result of the inclination of the long nozzle.

Description

The clamping and fixing device that is used for clamping long nozzle in the ladle pouring system

Technical field

The present invention relates to the continuous casting of molten steel field, be used for a kind of clamping and fixing device of clamping long nozzle in the ladle pouring system.

Background technology

In the smelting process of molten steel, particularly to pour into a mould the later stage, slag flow into tundish from big bag through long nozzle.The existence of slag has greatly influenced steel quality, when serious even continuous casting of molten steel can't be carried out.In order to improve steel quality, improve the molten steel recovery rate, must accurately detect the following quantity of slag in the big bag.Current technology about slag detection down is a lot, and wherein slag detection method cost is low, easy for installation down in vibration, and service life is longer, and application promise in clinical practice is arranged.

Fig. 1 shows the structural representation that slag detects under the vibration of the prior art.As shown in Figure 1; The vibration detection ratio juris is through a vibration detection device 8 being installed on mechanical arm 3, being flow into the process of tundish 2 from big bag 1 at molten steel, the stronger vibration of long nozzle 4 meeting generations; This vibration is given vibration detection device 8 through mechanical arm 3 conduction; Because the different caused vibrations with the proportion of slag of molten steel are inevitable variant, therefore, arrive the situation of bale slag-blanking through the vibrational energy indirect detection that detects long nozzle 4.

Fig. 2 shows that mechanical arm is connected sketch map with the part of long nozzle among Fig. 1.In the process of big bag cast, need long nozzle 4 be enclosed within on the slide plate of big bag 1 bottom, realize the protection cast of steel stream.Long nozzle 4 is supported by the backing ring 9 of motion arm 3 front ends, under hydraulic cylinder control, makes long nozzle 4 withstand slide plate 10, aims at the slide plate mouth of a river and begins to water steel.In the casting process, in order to make the level stability of tundish 2, need the opening degree of real-time regulated slide plate 10, especially in the cast later stage, the slide plate action is more frequent.Because the outer hoop 5 of long nozzle directly is enclosed within the backing ring 9, do not fix to clamp between the inner surface of the outer surface of long nozzle 4 and backing ring 9, thereby contact is not firm, makes to have the slit between long nozzle 4 and the slide plate.Like this, when big bag slide plate 10 moved, long nozzle 4 can rock in backing ring 9, and long nozzle 4 tilts easily.These influences not only can cause long nozzle 4 and slide plate 10 junction bleed-outs; Also can make molten steel or slag that long nozzle 4 is impacted the unusual interference that the vibration signal that produces receives the slide plate action; Useful signal is incurred loss and decay, greatly reduce down the accuracy that slag detects.

Summary of the invention

Technical problem to be solved by this invention provides a kind of device that in ladle pouring system, can fix to clamp long nozzle.

In order to solve the problems of the technologies described above; The invention provides the clamping and fixing device that is used for clamping long nozzle in a kind of ladle pouring system; Comprise: be used to be set in long nozzle; And, being respectively arranged with first through hole and second through hole on the top of backing ring and the wall of lower part to the passive backing ring of long nozzle, the outside of backing ring also is provided with fixed support; Clamp can be hinged on the fixed support rotationally, and the radially extension along backing ring of first through hole and second through hole is passed at its two ends respectively.

Further, the inner surface on the top of backing ring is for upwards being the internal conical surface that the expansion taper is extended, and the inner surface of the lower part of backing ring is an inner cylinder face.

Further, clamp is more than 3 or 2, is hinged on the fixed support evenly and at intervals along the backing ring excircle.

Further, fixed support is provided with and is used for the bolt hole that clamping and fixing device is fixing.

Further, clamp is hinged on the fixed support through bearing pin rotationally.

Further, clamp is sickleshaped.

Further, when clamping and fixing device was clamped condition, the two ends of clamp closely contacted with the outer wall of long nozzle simultaneously.

Adopt the clamping and fixing device that is used for the ladle pouring system long nozzle of above structure to have following beneficial effect:

1. the present invention has increased clamp on the outside of backing ring; The two ends of clamp can contact through the outer wall of the long nozzle in the through hole on the backing ring wall and the insertion backing ring; When long nozzle inserted backing ring, the inclined-plane of long nozzle pushed the upper end of clamp under the effect of self gravitation, and clamp is rotated; When long nozzle inserts backing ring fully; The two ends of clamp closely contact with the outer wall of long nozzle simultaneously, thereby through clamp long nozzle are fixedly clamped, and can prevent to tilt to cause long nozzle and slide plate junction bleed-out because of long nozzle.

2. the two ends of clamp of the present invention closely contact with the long nozzle outer wall, and molten steel or slag that the sensor inspection is then arrived are stronger to the impact shock signal that long nozzle produces, and have reduced the loss and the decay of vibration signal, have improved the vibration accuracy of slag detection down.

3. clamping and fixing device provided by the invention can clamp long nozzle and fix, and has eliminated the influence that causes sign mutation because of the slide plate frequent movement, makes the detected vibration signal of sensor steady, improves the accuracy that slag detects under the vibration.

4. the two ends up and down of clamp of the present invention can be rotated around pin joint, are overlapping/when getting long nozzle, and the rotation through clamp can realize to the automatic clamping of long nozzle and loosen that this clamping and fixing device is simple in structure, and it is convenient to implement.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 shows the structural representation that slag detects under the vibration of the prior art;

Fig. 2 shows that mechanical arm is connected sketch map with the part of long nozzle among Fig. 1;

Fig. 3 shows the clamping and fixing device structural representation according to the embodiment of the invention;

Fig. 4 shows the vertical view of clamping and fixing device shown in Figure 3; And

Fig. 5 shows the generalized section of clamping and fixing device shown in Figure 4 along the B-B line.

The specific embodiment

Below with reference to accompanying drawing and combine embodiment, specify the present invention.

Fig. 3 shows the clamping and fixing device structural representation according to the embodiment of the invention.As shown in Figure 3, clamping and fixing device comprises backing ring 9 and clamp 20.The outside of backing ring 9 is wound with a fixed support 91, and fixed support 91 is a circular metal support, with the structure that backing ring 9 can be formed in one, and also can be for being welded on the parts of backing ring 9 outer walls.Have through

hole

95 and 96 on the top of backing ring 9 and the wall of lower part.Clamp 20 is sickle-shaped member; The center is hinged on the fixed support 91 through bearing pin 30 rotationally, and the recess of clamp 20 is vertically towards backing ring 9, and its two ends are crooked to the backing ring wall; When clamp 20 rotated around pin joint, its two ends can be passed through

hole

95,96 and stretch in the backing ring 9.Fixed support 91 relative both sides also are provided with bolt hole 92, can clamping and fixing device be fixed on the front end of mechanical arm through bolt.

Fig. 4 shows the vertical view of clamping and fixing device shown in Figure 3.As shown in Figure 4, in the present embodiment, clamp 20 has 3; Periphery along backing ring 9 is hinged on the fixed support 91 evenly and at intervals, and certainly, the quantity of clamp can be set as required; Be at least 2, also can be more, for example; Can be set to 4, be distributed in the outside of backing ring 9 in twos relatively, evenly and at intervals; Also can be set to 2, be distributed in the outside of backing ring 9 symmetrically.

Fig. 5 shows the generalized section of clamping and fixing device shown in Figure 4 along the B-B line.As shown in Figure 5; The inner surface 93 on the top of backing ring 9 is designed to upwards be the internal conical surface structure that the expansion taper is extended; The inner surface 94 of the lower part of backing ring 9 is designed to the inner cylinder face structure, and the purpose of design is to match for the inner surface that makes backing ring 9 and the long nozzle external surface shape of clamping like this.Equally, in the present embodiment, the internal diameter size of the long nozzle outer wall of the internal diameter of backing ring 9 and clamping also is corresponding.

When clamping and fixing device is in free state; The inside that through hole 95 stretches into backing ring 9 is passed in the upper end 22 of clamp 20; When long nozzle was inserted in backing ring 9, the conical external surface under the long nozzle head hoop was outwards pushed the upper end 22 of clamp 20 under the gravity effect of long nozzle self, make the upper end 22 of clamp 20 rotate laterally around bearing pin 30; Lower end 21 rotates around bearing pin 30 to the inside; When long nozzle inserted fully, the upper end 22 of clamp 20 closely contacted with following cylindrical outer surface with the last conical external surface of long nozzle respectively with lower end 21, thereby long nozzle is fixedly clamped.When long nozzle took out from backing ring 9, loosening long nozzle realized in the upper end 22 of clamp 20 and lower end 21 rotation in opposite direction respectively.

The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. be used for the clamping and fixing device of clamping long nozzle in the ladle pouring system, it is characterized in that, comprising:

Be used to be set in said long nozzle; And to the passive backing ring of said long nozzle (9); Be respectively arranged with first through hole (95) and second through hole (96) on the top of said backing ring (9) and the wall of lower part, the outside of said backing ring also is provided with fixed support (91);

Clamp (20) can be hinged on the said fixed support (91) rotationally, and the radially extension of the said backing ring of said first through hole (95) and said second through hole (96) edge is passed at its two ends respectively.

2. clamping and fixing device according to claim 1 is characterized in that, the inner surface (93) on the top of said backing ring (9) is for upwards being the internal conical surface that the expansion taper is extended, and the inner surface (94) of the lower part of said backing ring (9) is an inner cylinder face.

3. clamping and fixing device according to claim 1 is characterized in that, said clamp (20) is more than 2 or 2, is hinged on evenly and at intervals on the said fixed support (91) along said backing ring (9) excircle.

4. clamping and fixing device according to claim 1 is characterized in that, said fixed support (91) is provided with and is used for the bolt hole (92) that said clamping and fixing device is fixing.

5. clamping and fixing device according to claim 1 is characterized in that, said clamp (20) is hinged on the said fixed support (91) through bearing pin (30) rotationally.

6. clamping and fixing device according to claim 1 is characterized in that, said clamp (20) is sickleshaped.

7. clamping and fixing device according to claim 1 is characterized in that, when said clamping and fixing device was clamped condition, the two ends of said clamp (20) closely contacted with the outer wall of said long nozzle simultaneously.