Movable supporting system for molten steel tundish stopper mechanism

Abstract

The utility model relates to a movable supporting system for a molten steel tundish stopper mechanism, which belongs to the field of metallurgical equipment, and comprises a mechanism bottom plate, a bearing sleeve, a guide shaft, a box body and a supporting component, the bearing sleeve is vertically arranged on one side of the mechanism bottom plate and is connected with the mechanism bottom plate through a sleeve seat, and the guide shaft is arranged on the bearing sleeve. The guide shaft is vertically inserted into the top end of the bearing sleeve, the box body is arranged at the bottom end of the bearing sleeve, the guide shaft is driven by the driving source to move up and down, the supporting assembly is used for supporting the guide shaft in an up-down moving mode, and an auxiliary assembly is arranged on the mechanism bottom plate. The auxiliary assembly is located on the side, close to the bearing sleeve, of the mechanism bottom plate. The auxiliary assembly comprises a bearing plate, the bearing plate is fixedly arranged on the mechanism bottom plate, the box body is supported, namely the bearing sleeve is supported, the function of reducing stress of the sleeve seat is achieved, and the situation that the bearing sleeve inclines due to deformation of the sleeve seat is avoided.

Description

Technical Field

[0001] The utility model relates to a mobile supporting system for a plugger rod mechanism of a molten steel tundish, belonging to the field of metallurgical equipment. Background Art

[0002] The tundish stopper mechanism has the characteristics of flexible mechanism, reliable action, strong and durable, long life, high temperature resistance, etc. It is the first choice for controlling the steel flow in continuous casting production. The size of the stopper opening determines the flow rate of molten steel from the tundish into the crystallizer and whether the molten steel can be stably and continuously supplied to the crystallizer. The guide and support devices in the stopper control mechanism play an extremely important role. The support method of the moving part of the stopper control mechanism determines the key component of the stopper opening.

[0003] The Chinese utility model patent with the announcement number CN215998693U discloses a supporting device for the moving part of the tundish stopper mechanism, which relates to the field of metallurgical equipment, including a mechanism bottom plate, a bearing sleeve, a guide shaft and a supporting assembly. The bearing sleeve is connected and fixed to the mechanism bottom plate through a sleeve seat, and a guide shaft is inserted in the bearing sleeve, and the guide shaft is guided by the supporting assembly provided on the bearing sleeve. The device innovates the precise combination of the guide shaft, the linear bearing and the composite bearing, thereby developing a new supporting method for the moving part of the stopper mechanism. Although its structural form is slightly more complicated than that of the copper sleeve, it has small movement resistance, flexible mechanism, high precision, low failure rate, convenient maintenance and disassembly, low manufacturing cost, and high control precision under the automatic liquid level control. The control of the opening size of the stopper is very accurate, but in the prior art, the weight on the bearing sleeve is transmitted to the mechanism bottom plate through the sleeve seat, and the sleeve seat is easily deformed after being subjected to force for a long time, thereby causing the bearing sleeve to tilt, that is, causing the guide shaft to tilt, thereby affecting the accuracy of the up and down displacement of the stopper.

[0004] Therefore, there is a need for a mobile support system for a molten steel tundish plug rod mechanism to improve and reduce the force on the sleeve seat and avoid deformation of the sleeve seat and tilting of the bearing sleeve. Summary of the invention

[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies of the prior art, a mobile support system for a molten steel tundish plug rod mechanism is provided, which can improve and reduce the stress on the sleeve seat and avoid deformation of the sleeve seat and tilting of the bearing sleeve.

[0006] The technical solution adopted by the utility model to solve the above problems is: a mobile support system for a molten steel tundish plug rod mechanism, comprising a mechanism bottom plate, a bearing sleeve, a guide shaft, a box body and a support assembly, wherein the bearing sleeve is vertically arranged on one side of the mechanism bottom plate, the bearing sleeve is connected to the mechanism bottom plate through a sleeve seat, the guide shaft is vertically inserted into the top end of the bearing sleeve, the box body is arranged at the bottom end of the bearing sleeve, the guide shaft is driven to move up and down by a driving source, the support assembly is used to realize the up and down movement support of the guide shaft, and an auxiliary assembly is arranged on the mechanism bottom plate, and the auxiliary assembly is located on the side of the mechanism bottom plate close to the bearing sleeve;

[0007] The auxiliary component comprises a load-bearing plate, which is fixedly arranged on the bottom plate of the mechanism and located below the box body, and is used to support the box body.

[0008] Preferably, the auxiliary component also includes a first support plate and a second support plate, which are distributed up and down between the box body and the load-bearing plate, the top of the first support plate contacts the bottom of the box body, and the second support plate contacts the top of the load-bearing plate, a gasket is clamped between the first support plate and the second support plate, and the first support plate and the second support plate are locked by a locking piece.

[0009] Preferably, the gasket is provided in plurality and the plurality of gaskets are stacked up and down.

[0010] Preferably, the bottom of the second support plate is raised to form a protrusion, the top of the load-bearing plate is concave to form a groove, the protrusion is a spherical surface, the groove matches the protrusion, the protrusion is inserted into the groove, the protrusion fits with the inner wall of the groove, a gap is provided between the second support plate and the load-bearing plate, and the top of the first support plate fits with the bottom of the box.

[0011] Preferably, a steel wire rope is provided on the load-bearing plate, one end of the steel wire rope is fixedly provided on a side of the load-bearing plate away from the mechanism bottom plate, the other end of the steel wire rope is fixedly provided on the mechanism bottom plate, the end where the steel wire rope is connected to the mechanism bottom plate is located at the upper left of the other end of the steel wire rope, and the connection end between the steel wire rope and the mechanism bottom plate is located above the load-bearing plate.

[0012] Preferably, the steel wire ropes are provided in plurality, and the plurality of steel wire ropes are distributed front and back.

[0013] Preferably, the support assembly comprises a linear bearing and a composite bearing, both of which are mounted on the inner wall of the bearing sleeve, and the guide shaft is in sliding contact with the linear bearing and the composite bearing.

[0014] Preferably, two linear bearings and two composite bearings are provided, the two linear bearings are arranged vertically, and the two composite bearings are arranged vertically between the two linear bearings.

[0015] Preferably, the driving source is a driving cylinder, the piston rod of the driving cylinder is parallel to the guide shaft, the outer wall of the bearing sleeve is provided with a first support, the first support is hinged to the cylinder body of the driving cylinder, a second support is provided on the outer side of the top end of the guide shaft, the second support and the first support are distributed up and down, and the top end of the piston rod of the driving cylinder is hinged to the second support.

[0016] Preferably, two sleeve seats are provided, and the two sleeve seats are distributed up and down.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] The utility model discloses a mobile supporting system for a molten steel tundish plug rod mechanism, which reduces the stress on a sleeve seat and avoids the sleeve seat from being deformed and causing the bearing sleeve to tilt by supporting a box body, namely supporting a bearing sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a mobile support system for a molten steel tundish plugger rod mechanism according to the utility model;

[0020] Figure 2 is a schematic diagram of the structure of the auxiliary components;

[0021] Figure 3 It is a structural diagram of the load-bearing plate.

[0022] in:

[0023] Mechanism bottom plate 1, bearing sleeve 2, guide shaft 3, box body 4, support assembly 5, sleeve seat 6, upper cover plate 7, stopper rod 8, swing arm 9, drive cylinder 10, first support 11, second support 12, auxiliary assembly 13;

[0024] Linear bearing 51, composite bearing 52;

[0025] The load-bearing plate 131 , the steel wire rope 132 , the first supporting plate 133 , the second supporting plate 134 , the gasket 135 , the locking member 136 , the protrusion 137 , and the groove 138 . DETAILED DESCRIPTION

[0026] like Figure 1-3As shown, a mobile supporting system for a stopper rod mechanism of a molten steel tundish in this embodiment comprises a mechanism bottom plate 1, a bearing sleeve 2, a guide shaft 3, a box body 4 and a supporting assembly 5, one side of the mechanism bottom plate 1 is fixed to the tundish body by bolts, the bearing sleeve 2 is vertically arranged on the other side of the mechanism bottom plate 1, the bearing sleeve 2 is connected to the mechanism bottom plate 1 through a sleeve seat 6, two sleeve seats 6 are provided, and the two sleeve seats 6 are distributed up and down, the guide shaft 3 is vertically inserted into the top end of the bearing sleeve 2, the guide shaft 3 is coaxially arranged with the bearing sleeve 2, the top end of the guide shaft 3 is connected to a swing arm 9 equipped with a stopper rod 8 through an upper cover plate 7, the box body 4 is fixedly arranged at the bottom end of the bearing sleeve 2, the guide shaft 3 is driven to move up and down by a driving source, the driving source is a driving cylinder 10, the piston rod of the driving cylinder 10 is parallel to the guide shaft 3, the outer side wall of the bearing sleeve 2 is provided with a first support 11, the first support The seat 11 is hinged with the cylinder body of the driving cylinder 10, and a second support is arranged on the outer side of the top end of the guide shaft 3, and the second support and the first support 11 are distributed up and down. The top end of the piston rod of the driving cylinder 10 is hinged with the second support, and the driving cylinder 10 drives the guide shaft 3 to make up and down linear motions to complete the displacement control of the stopper rod 8. A displacement sensor is built into the driving cylinder 10, so that the displacement variable of the stopper rod 8 on the water inlet of the tundish can be accurately controlled, so as to achieve the purpose of accurately controlling the flow rate of molten steel flowing into the crystallizer from the tundish. The support assembly 5 is used to realize the up and down movement support of the guide shaft 3. An auxiliary assembly 13 is arranged on the bottom plate 1 of the mechanism, and the auxiliary assembly 13 is located on the side of the bottom plate 1 of the mechanism close to the bearing sleeve 2. The auxiliary assembly 13 is used to realize the support of the bottom of the box body 4, that is, the support of the bearing sleeve 2 is realized through the auxiliary assembly 13, so as to reduce the force on the sleeve seat 6 and avoid the deformation of the sleeve seat 6 and the tilt of the bearing sleeve 2;

[0027] The support assembly 5 includes two linear bearings 51 and two composite bearings 52. The two linear bearings 51 and the two composite bearings 52 are both mounted on the inner wall of the bearing sleeve 2. The two linear bearings 51 are arranged up and down, and the two composite bearings 52 are arranged up and down between the two linear bearings 51. The guide shaft 3 is slidably connected with the two linear bearings 51 and the two composite bearings 52. With the cooperation of the two linear bearings 51, the guide shaft 3 has a small load, a low failure rate, and smooth lifting and lowering because the load-bearing balls in the linear bearings 51 are in point contact with the guide shaft 3. With the cooperation of the two composite bearings 52, the guide shaft 3 is prevented from rotating and displacing. Through the combined use of the linear bearings 51 and the composite bearings 52, a linear motion system with high precision, low cost, and low friction resistance is completed, and the axial displacement of the guide shaft 3 is accurately controlled.

[0028] The auxiliary component 13 includes a load-bearing plate 131, which is fixedly arranged on the mechanism bottom plate 1, and the load-bearing plate 131 is located below the box body 4. A steel wire rope 132 is arranged on the load-bearing plate 131, and one end of the steel wire rope 132 is fixedly arranged on a side of the load-bearing plate 131 away from the mechanism bottom plate 1, and the other end of the steel wire rope 132 is fixedly arranged on the mechanism bottom plate 1, and the end of the steel wire rope 132 connected to the mechanism bottom plate 1 is located at the upper left of the other end of the steel wire rope 132, and the steel wire rope 132 is connected to the mechanism bottom plate 1. The connection end of the bottom plate 1 is located above the load-bearing plate 131. Two steel wire ropes 132 are provided. The two steel wire ropes 132 are distributed front and back. The two steel wire ropes 132 are respectively located at the front and back sides of the bearing sleeve 2. Part of the downward force generated by the bearing sleeve 2 is transmitted to the load-bearing plate 131 through the box body 4. The box body 4 is supported by the load-bearing plate 131, that is, the bearing sleeve 2 is supported, thereby reducing the force on the sleeve seat 6. At the same time, the steel wire ropes 132 are used to disperse the force on the heavy plate, thereby improving the ability of the heavy plate to support the bearing sleeve 2.

[0029] The auxiliary component 13 further includes a first support plate 133 and a second support plate 134, which are distributed vertically between the box body 4 and the load-bearing plate 131, the top of the first support plate 133 contacts the bottom of the box body 4, and the second support plate 134 contacts the top of the load-bearing plate 131, a gasket 135 is sandwiched between the first support plate 133 and the second support plate 134, and the first support plate 133 and the second support plate 134 are locked by a locking member 136, which is a screw, and part of the downward force generated by the bearing sleeve 2 is transmitted to the first support plate 133 through the box body 4, and the force on the first support plate 133 is transmitted to the load-bearing plate 131 through the gasket 135 and the second support plate 134 in turn;

[0030] The gasket 135 is provided with a plurality of gaskets 135, and the plurality of gaskets 135 are stacked up and down. In actual use, the number of gaskets 135 can be adjusted to ensure that the first support plate 133 fits the bottom of the box body 4, thereby improving the support reliability. When adjusting the number of gaskets 135, the screws are loosened to reduce or increase the number of gaskets 135 between the first support plate 133 and the second support plate 134 until the first support plate 133 fits the bottom of the box body 4. After the number of gaskets 135 is adjusted, the screws are tightened to achieve the fixation between the first support plate 133 and the second support plate 134;

[0031] The bottom of the second support plate 134 is raised to form a protrusion 137, and the top of the bearing plate 131 is concave to form a groove 138. The protrusion 137 is a spherical surface, and the groove 138 matches the protrusion 137. The protrusion 137 is inserted into the groove 138, and the protrusion 137 is in contact with the inner wall of the groove 138. A gap is provided between the second support plate 134 and the bearing plate 131, and the top of the first support plate 133 is in contact with the bottom of the box body 4. The cooperation between the protrusion 137 and the groove 138 facilitates the adjustment of the angle of the second support plate 134, that is, the adjustment of the angle of the first support plate 133, and ensures that the top of the first support plate 133 fits with the bottom of the box body 4, so as to avoid the box body 4 being unable to fit with the first support plate 133 when the bottom of the box body 4 forms an inclined surface due to processing errors. When the bottom of the box body 4 is an inclined surface, the box body 4 and the first support plate 133 are in line contact, which affects the support stability and easily causes damage to the first support plate 133.

[0032] In summary, by supporting the housing 4, that is, supporting the bearing sleeve 2, the function of reducing the stress on the sleeve seat 6 is achieved, thereby preventing the sleeve seat 6 from deforming and causing the bearing sleeve 2 to tilt.

[0033] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A mobile support system for a molten steel tundish stopper rod mechanism, comprising a mechanism bottom plate (1), a bearing sleeve (2), a guide shaft (3), a housing (4) and a support assembly (5), wherein the bearing sleeve (2) is vertically arranged on one side of the mechanism bottom plate (1), the bearing sleeve (2) is connected to the mechanism bottom plate (1) via a sleeve seat (6), the guide shaft (3) is vertically inserted into the top end of the bearing sleeve (2), the housing (4) is arranged at the bottom end of the bearing sleeve (2), the guide shaft (3) is driven to move up and down by a driving source, and the support assembly (5) is used to realize the support of the guide shaft (3) to move up and down, and is characterized in that: An auxiliary component (13) is provided on the mechanism bottom plate (1), and the auxiliary component (13) is located on a side of the mechanism bottom plate (1) close to the bearing sleeve (2); The auxiliary component (13) comprises a load-bearing plate (131), wherein the load-bearing plate (131) is fixedly arranged on the mechanism bottom plate (1), and the load-bearing plate (131) is located below the box body (4), and the load-bearing plate (131) is used to support the box body (4).

2. A mobile support system for a molten steel tundish stopper rod mechanism according to claim 1, characterized in that: The auxiliary component (13) further comprises a first support plate (133) and a second support plate (134); the first support plate (133) and the second support plate (134) are distributed vertically between the box body (4) and the load-bearing plate (131); the top of the first support plate (133) contacts the bottom of the box body (4); the second support plate (134) contacts the top of the load-bearing plate (131); a gasket (135) is sandwiched between the first support plate (133) and the second support plate (134); and the first support plate (133) and the second support plate (134) are locked by a locking member (136).

3. A mobile support system for a molten steel tundish stopper rod mechanism according to claim 2, characterized in that: A plurality of gaskets (135) are provided, and the plurality of gaskets (135) are stacked up and down.

4. A mobile support system for a molten steel tundish stopper rod mechanism according to claim 2, characterized in that: The bottom of the second support plate (134) is raised to form a protruding portion (137), and the top of the load-bearing plate (131) is concave to form a groove (138); the protruding portion (137) is a spherical surface, and the groove (138) matches the protruding portion (137); the protruding portion (137) is inserted into the groove (138), and the protruding portion (137) is in contact with the inner wall of the groove (138); a gap is provided between the second support plate (134) and the load-bearing plate (131), and the top of the first support plate (133) is in contact with the bottom of the box body (4).

5. A mobile support system for a molten steel tundish stopper rod mechanism according to any one of claims 1 to 4, characterized in that: A steel wire rope (132) is arranged on the load-bearing plate (131), one end of the steel wire rope (132) is fixedly arranged on a side of the load-bearing plate (131) away from the mechanism bottom plate (1), the other end of the steel wire rope (132) is fixedly arranged on the mechanism bottom plate (1), the end of the steel wire rope (132) connected to the mechanism bottom plate (1) is located at the upper left of the other end of the steel wire rope (132), and the end of the steel wire rope (132) connected to the mechanism bottom plate (1) is located above the load-bearing plate (131).

6. A mobile support system for a molten steel tundish stopper rod mechanism according to claim 5, characterized in that: A plurality of the steel wire ropes (132) are provided, and the plurality of steel wire ropes (132) are distributed front and back.

7. The mobile support system for the stopper rod mechanism of the molten steel tundish according to claim 1, characterized in that: The support assembly (5) comprises a linear bearing (51) and a composite bearing (52); the linear bearing (51) and the composite bearing (52) are both mounted on the inner wall of the bearing sleeve (2); and the guide shaft (3) is slidably connected with the linear bearing (51) and the composite bearing (52).

8. The mobile support system for the stopper rod mechanism of the molten steel tundish according to claim 7, characterized in that: Two linear bearings (51) and two composite bearings (52) are provided, the two linear bearings (51) are arranged vertically, and the two composite bearings (52) are arranged vertically between the two linear bearings (51).

9. The mobile support system for the stopper rod mechanism of the molten steel tundish according to claim 1, characterized in that: The driving source is a driving cylinder (10), the piston rod of the driving cylinder (10) is parallel to the guide shaft (3), the outer wall of the bearing sleeve (2) is provided with a first support (11), the first support (11) is hinged to the cylinder body of the driving cylinder (10), a second support is provided on the outer side of the top end of the guiding shaft (3), the second support and the first support (11) are distributed up and down, and the top end of the piston rod of the driving cylinder (10) is hinged to the second support.

10. The mobile support system for the stopper rod mechanism of the molten steel tundish according to claim 1, characterized in that: Two sleeve seats (6) are provided, and the two sleeve seats (6) are distributed up and down.

Images