Large tundish stopper rod flow control and replacement device and method

Abstract

The invention relates to the technical field of metallurgical engineering, in particular to a large tundish stopper rod flow control and replacement device and method. The large tundish stopper rod flow control and replacement device comprises a supporting frame, a tundish is placed in the supporting frame, a platform rail is transversely fixed to a transverse beam on the side of the supporting frame, a hydraulic mechanical arm used for clamping and controlling a stopper rod to move up and down is installed on the platform rail in a sliding mode, and a transverse beam rail is transversely installed at the top of the supporting frame. An electric hoist is slidably mounted on the beam track, a hanging ring is mounted at the top of the stopper, and a hook for hooking the hanging ring is mounted on a steel wire rope of the electric hoist. By means of the method that the hydraulic manipulator is matched with the electric hoist, stable and safe replacement of the large stopper rod is achieved, and the problem that the large stopper rod is difficult to replace is solved. The hydraulic mechanical arm controls the stopper rod to ascend and descend, the flow control function of the tundish is achieved, the balance weight of the tundish is reduced, stress is prevented from being in an eccentric state, and the service life of the tundish is prolonged to a certain degree.

Description

Technical Field

[0001] The invention relates to the field of metallurgical engineering technology, and in particular to a flow control and replacement device and method for a large-scale tundish plug rod. Background Art

[0002] The tundish is a refractory container made of steel shell and refractory materials. It plays the role of storing slag and controlling the slag flow upstream of the slag dry granulation process. The stopper rod is a refractory rod installed in the tundish that controls the opening and closing of the water inlet and the slag flow by lifting and displacing. It is also called a ceramic stopper rod. With the continuous innovation of continuous casting technology, the life of the stopper rod can reach 156 hours, but the life of the tundish is much longer than that of the stopper rod. It is difficult to further extend the life of the stopper rod with current technology. Therefore, during the use of the tundish, the stopper rod needs to be replaced to match the use of the tundish.

[0003] Reference Figure 1 In the prior art, a stopper rod 2 is vertically inserted into the cover of the tundish 1, and a stopper rod lifting mechanism 3 is fixed on the side wall of the tundish 2 to control the up and down movement of the stopper rod 2, thereby controlling the flow rate of the water outlet at the bottom of the tundish 1. However, the stopper rod lifting mechanism 3 is fixed on the side wall of the tundish 1, which not only increases the counterweight of the tundish 1 itself, but also places the force in an eccentric state. The long-term lifting and lowering of the stopper rod lifting mechanism 3 easily causes fatigue of the fixing plate of the side wall of the tundish 1, thereby shortening the service life of the tundish 1.

[0004] A large tundish 1 needs to be equipped with a large stopper rod 2 and a stopper rod lifting mechanism 3. The stopper rod 2 is several meters long. The existing stopper rod lifting mechanism 3 can only assist the stopper rod 2 in controlling the flow. When the stopper rod 2 reaches the end of its service life, the entire stopper rod 2 cannot be lifted out, and the stopper rod 2 cannot be quickly replaced. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a large-scale tundish plugger flow control and replacement device and method.

[0006] In the first aspect, the present invention provides a large-scale tundish plug rod flow control and replacement device, which adopts the following technical solution: A large-scale tundish stopper rod flow control and replacement device comprises a supporting frame, the tundish is placed in the supporting frame, a platform track is transversely fixed on the side beam of the supporting frame, a hydraulic manipulator for clamping and controlling the stopper rod to move up and down is slidably installed on the platform track, a beam track is transversely installed on the top of the supporting frame, an electric hoist is slidably installed on the beam track, a lifting ring is installed on the top of the stopper rod, and a hook for hooking the lifting ring is installed on the wire rope of the electric hoist.

[0007] By adopting the above technical solution, the overall design of the device is reasonable and the operation is convenient. At the same time, it has the functions of controlling the lifting and lowering of the stopper rod and replacing the stopper rod, which reduces the counterweight of the tundish itself, prevents the force from being in an eccentric state, and improves the service life of the tundish to a certain extent.

[0008] In a second aspect, the present invention provides a method for controlling flow and replacing a large tundish plug rod, comprising the following steps: S1. The hydraulic manipulator controls the vertical movement of the stopper rod, specifically including: the hydraulic manipulator moves along the platform track to the center line position of the stopper rod and locks it, extends the mechanical claw to clamp and lock the stopper rod, and uses the hydraulic manipulator to control the vertical lifting of the stopper rod; S2. The hydraulic manipulator preliminarily lifts the stopper rod, specifically including: installing the lifting ring on the stopper rod, and the hydraulic manipulator clamps the stopper rod and lifts it upward; S3, the electric hoist lifts the stopper rod again, specifically including: after the stopper rod is lifted to a certain height, the electric hoist moves along the beam track to a position coincident with the axis of the stopper rod, lowers the hook to the lifting ring position, and hangs the hook on the lifting ring. At this time, the hydraulic manipulator releases the lock on the stopper rod, and the electric hoist continues to lift the stopper rod until it is completely separated from the cover surface; S4, the electric hoist moves the stopper rod out horizontally, specifically comprising: the electric hoist lifts the stopper rod out along the beam track until it moves to the edge of the support frame; S5, the electric hoist is laterally moved into a new stopper rod, specifically including: replacing the new stopper rod onto the hook of the electric hoist and moving it to the installation position; S6. The electric hoist is lowered to install a new stopper rod, which specifically includes: the electric hoist wire rope falls, the new stopper rod moves vertically downward, and after moving to the specified position, the hook is removed, and the hydraulic manipulator clamps and locks the new stopper rod, and the installation is completed.

[0009] By adopting the above technical solution, the hydraulic manipulator replaces the stopper rod lifting mechanism in the prior art, and the hydraulic manipulator and the electric hoist are used to achieve the stable and safe replacement of large stopper rods, solving the problem of difficulty in replacing large stopper rods. The hydraulic manipulator controls the lifting and lowering of the stopper rod, which not only realizes the flow control function of the tundish, but also reduces the counterweight of the tundish itself, prevents the force from being in an eccentric state, and improves the service life of the tundish to a certain extent.

[0010] Optionally, the hydraulic manipulator in S3 is still in a clamping state when releasing the lock of the stopper rod, so as to ensure that the stopper rod does not shake significantly during the lifting process.

[0011] By adopting the above technical solution, the stability of the stopper rod during lifting is improved.

[0012] Optionally, during the transportation of the stopper rod in S4, the hydraulic manipulator moves synchronously to prevent the stopper rod from falling off and causing an accident. After moving to the edge position of the support frame, the hydraulic manipulator is retracted.

[0013] By adopting the above technical solution, the stability of the stopper rod during lateral movement is improved, and accidents caused by the stopper rod falling off are prevented.

[0014] Optionally, the hydraulic manipulator in S5 extends out again to clamp the new stopper rod, and moves to the installation position synchronously with the electric hoist, and uses the hydraulic manipulator to adjust the axis of the new stopper rod to coincide with the center axis of the installation hole.

[0015] By adopting the above technical solution, the stability of the new stopper rod during lateral movement is improved, and the installation position of the new stopper rod is easily adjusted, which is convenient for subsequent installation.

[0016] Optionally, in S6, the mechanical claw first releases the new stopper rod, but the mechanical claw is still within the range of the mounting hole, and then the electric hoist wire rope falls again.

[0017] By adopting the above technical solution, the stability of the new stopper rod during the lowering and installation process is improved.

[0018] In summary, the present invention includes at least one of the following beneficial technical effects: The hydraulic manipulator replaces the stopper rod lifting mechanism in the prior art. The hydraulic manipulator and the electric hoist are used to achieve the stable and safe replacement of large stopper rods, solving the problem of difficulty in replacing large stopper rods. The hydraulic manipulator controls the lifting and lowering of the stopper rod, which not only realizes the flow control function of the tundish, but also reduces the counterweight of the tundish itself, prevents the force from being in an eccentric state, and improves the service life of the tundish to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the cooperation between the stopper rod lifting mechanism and the stopper rod in the prior art.

[0020] Figure 2 It is a stereoscopic diagram of a large-scale tundish plug rod flow control and replacement device according to an embodiment of the present invention.

[0021] Figure 3 It is a front view of a large-scale tundish plug rod flow control and replacement device according to an embodiment of the present invention.

[0022] Figure 4 It is a flow chart of a method for controlling flow and replacing a large-scale tundish plug rod according to an embodiment of the present invention.

[0023] Explanation of the reference numerals: 1. Tundish; 2. Stopper rod; 3. Stopper rod lifting mechanism; 4. Support frame; 5. Platform track; 6. Hydraulic manipulator; 7. Crossbeam track; 8. Electric hoist. DETAILED DESCRIPTION

[0024] The following is combined with Figure 2 -Attached Figure 4 The present invention is described in further detail.

[0025] The embodiment of the present invention discloses a large-scale tundish plug rod flow control and replacement device and method. Figure 2 and Figure 3 The large-scale tundish stopper rod flow control and replacement device comprises a support frame 4, the tundish 1 is placed in the middle and lower part of the support frame 4, and an operating space is reserved inside the support frame 4. A platform track 5 is transversely fixed on the side crossbeam in the middle of the support frame 4, and a hydraulic manipulator 6 is slidably installed on the platform track 5. The hydraulic manipulator 6 can reciprocate along the platform track 5, and the hydraulic manipulator 6 is used to clamp the top of the stopper rod 2.

[0026] Reference Figure 2 and Figure 3 A transversely arranged beam track 7 is fixed on the top of the support frame 4, and the beam track 7 is located directly above the tundish 1. An electric hoist 8 is slidably installed on the beam track 7. A lifting ring is detachably installed on the top of the stopper rod 2, and a hook for hooking the lifting ring is installed on the chain of the electric hoist 8.

[0027] Reference Figure 2-Figure 4 The large-scale tundish plug rod flow control and replacement method of the embodiment of the present invention comprises the following steps: S1. The hydraulic manipulator 6 controls the vertical movement of the stopper rod 2, specifically including: the hydraulic manipulator 6 moves along the platform track 5 to the center line position of the stopper rod 2 and is locked, and the mechanical claws are extended to clamp and lock the stopper rod 2, and the hydraulic manipulator 6 is used to control the vertical lifting of the stopper rod 2 to realize the flow control function of the tundish 1.

[0028] S2, the hydraulic manipulator 6 preliminarily lifts the stopper rod 2, specifically including: installing the lifting ring on the stopper rod 2, the hydraulic manipulator 6 clamps the stopper rod 2 and lifts it upward, at which time the stopper rod 2 will be lifted upward along its axis.

[0029] S3, the electric hoist 8 lifts the stopper rod 2 again, specifically including: after the stopper rod 2 is lifted to a certain height, the electric hoist 8 is moved along the beam track 7 to a position coincident with the axis of the stopper rod 2, the hook is lowered to the lifting ring position, and the hook is hooked on the lifting ring. At this time, the hydraulic manipulator 6 releases the lock on the stopper rod 2, but is still in a clamping state to ensure that the stopper rod 2 does not shake significantly during the lifting process, and then the electric hoist 8 continues to lift the stopper rod 2 until it is completely separated from the cover surface.

[0030] S4, the hydraulic manipulator 6 cooperates with the electric hoist 8 to move the stopper rod 2 out laterally, specifically including: the electric hoist 8 lifts the stopper rod 2 and transports it out along the beam track 7. During the transportation of the stopper rod 2, the hydraulic manipulator 6 can move synchronously to prevent the stopper rod 2 from falling off and causing an accident, thereby playing a protective role, until it moves to the edge of the support frame 4 and the hydraulic manipulator 6 is retracted.

[0031] S5, the hydraulic manipulator 6 cooperates with the electric hoist 8 to move the new stopper rod 2 laterally, specifically including: replacing the new stopper rod 2 onto the hook of the electric hoist 8, the hydraulic manipulator 6 extends out again to clamp the new stopper rod 2, and moves to the installation position synchronously with the electric hoist 8, and uses the hydraulic manipulator 6 to adjust the axis of the stopper rod 2 to coincide with the center axis of the installation hole.

[0032] S6, the electric hoist 8 is lowered to install a new stopper rod 2, which specifically includes: the mechanical claw releases the stopper rod 2, but the mechanical claw is still within the range of the installation hole, the wire rope of the electric hoist 8 falls, the stopper rod 2 moves vertically downward, and after moving to the specified position, the hook is removed, and the hydraulic manipulator clamps and locks the stopper rod 2, and the installation is completed.

[0033] When the stopper rod 2 works normally, the hydraulic manipulator 6 is used to control the stopper rod 2 to move up and down to realize the flow control function of the tundish 1; when the stopper rod 2 needs to be replaced, a lifting ring is installed on the stopper rod 2, and then the hydraulic manipulator 6 is used to lift the stopper rod 2 to a certain height, and then the hook of the electric hoist 8 is installed on the lifting ring, and the steel wire rope of the electric hoist 8 is used for secondary lifting. When the stopper rod 2 is completely separated from the upper surface of the tundish 1 cover, the electric hoist 8 is driven to move along the beam track 7 to transport the stopper rod 2 out for replacement.

[0034] The embodiment of the present invention replaces the stopper rod lifting mechanism 3 in the prior art with a hydraulic manipulator 6, and utilizes the method of cooperating with the hydraulic manipulator 6 and the electric hoist 8 to realize the stable and safe replacement of the large stopper rod 2, thereby solving the problem of the difficulty in replacing the large stopper rod 2. The hydraulic manipulator 6 controls the lifting and lowering of the stopper rod 2, which not only realizes the flow control function of the tundish 1, but also reduces the counterweight of the tundish 1 itself, prevents the force from being in an eccentric state, and improves the service life of the tundish 1 to a certain extent.

[0035] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A large-scale tundish plugger flow control and replacement device, characterized in that: The invention comprises a support frame (4), wherein the tundish (1) is placed in the support frame (4), a platform track (5) is transversely fixed on the side beam of the support frame (4), a hydraulic manipulator (6) for clamping and controlling the upward and downward movement of a stopper rod (2) is slidably installed on the platform track (5), a beam track (7) is transversely installed on the top of the support frame (4), an electric hoist (8) is slidably installed on the beam track (7), a lifting ring is installed on the top of the stopper rod (2), and a hook for hooking the lifting ring is installed on the steel wire rope of the electric hoist (8).

2. A method for controlling flow and replacing a large-scale tundish plug rod, using the large-scale tundish plug rod control and replacement device as claimed in claim 1, characterized in that: The following steps are involved: S1, the hydraulic manipulator (6) controls the vertical movement of the stopper rod (2), specifically comprising: the hydraulic manipulator (6) moves along the platform track (5) to the center line position of the stopper rod (2) and locks, extends the mechanical claw to clamp and lock the stopper rod (2), and uses the hydraulic manipulator (6) to control the vertical lifting of the stopper rod (2); S2, the hydraulic manipulator (6) initially lifts the stopper rod (2), specifically comprising: installing a lifting ring on the stopper rod (2), and the hydraulic manipulator (6) clamps the stopper rod (2) and lifts it upward; S3, the electric hoist (8) lifts the stopper rod (2) again, specifically comprising: after the stopper rod (2) is lifted to a certain height, the electric hoist (8) moves along the crossbeam track (7) to a position coincident with the axis of the stopper rod (2), lowers the hook to the lifting ring position, and hooks the hook to the lifting ring. At this time, the hydraulic manipulator (6) releases the lock on the stopper rod (2), and the electric hoist (8) continues to lift the stopper rod (2) until it is completely separated from the cover surface; S4, the electric hoist (8) moves the stopper rod (2) out laterally, specifically comprising: the electric hoist (8) lifts the stopper rod (2) out along the crossbeam track (7) until it moves to the edge of the support frame (4); S5, the electric hoist (8) is laterally moved into a new stopper rod (2), specifically comprising: replacing the new stopper rod (2) onto the hook of the electric hoist (8) and moving it to an installation position; S6. The electric hoist (8) is lowered to install a new stopper rod (2), which specifically includes: the steel wire rope of the electric hoist (8) is lowered, the new stopper rod (2) is moved vertically downward, and after moving to a designated position, the hook is removed, and the hydraulic manipulator (6) clamps and locks the new stopper rod (2), and the installation is completed.

3. The method for controlling flow and replacing large-scale tundish plug rod according to claim 2, characterized in that: In S3, the hydraulic manipulator (6) is still in a clamping state when releasing the lock on the stopper rod (2), so as to ensure that the stopper rod (2) does not shake significantly during the lifting process.

4. The method for controlling flow and replacing a large tundish plug rod according to claim 3, characterized in that: In S4, during the transportation of the stopper rod (2), the hydraulic manipulator (6) moves synchronously to prevent the stopper rod (2) from falling off and causing an accident. After moving to the edge position of the support frame (4), the hydraulic manipulator (6) is retracted.

5. The method for controlling flow and replacing large-scale tundish plug rod according to claim 4, characterized in that: In S5, the hydraulic manipulator (6) extends again to clamp the new stopper rod (2), and moves to the installation position synchronously with the electric hoist (8), and uses the hydraulic manipulator (6) to adjust the axis of the new stopper rod (2) to coincide with the central axis of the installation hole.

6. The method for controlling flow and replacing a large tundish plug rod according to claim 5, characterized in that: In S6, the mechanical claw first releases the new stopper rod (2), but the mechanical claw is still within the range of the installation hole, and then the wire rope of the electric hoist (8) falls again.

Images