Transmission device of vertical rolling mill

Abstract

The present invention relates to a transmission device of a vertical rolling mill. The purpose of the present invention is to provide a transmission device capable of accurately adjusting the position of a transmission shaft and keeping the axis core of the transmission shaft located in a vertical plane. The first and second transmission shafts arranged vertically are located in the area between the left and right brackets. The left and right brackets are correspondingly provided with first strip holes. The shaft bodies of the first and second transmission shafts are correspondingly provided with first and second bearing seats. The connecting parts provided on the first and second bearing seats form a sliding fit with the first strip holes. The adjusting mechanism drives the first and second transmission shafts to move along the direction defined by the first strip holes. When the rollers are separated from the transmission shafts, the brackets support the connecting parts on the first and second bearing seats. The driving mechanism then drives the first and second transmission shafts to brake along the first strip holes to the matching positions of the shaft end mounting holes of the first and second transmission shafts and the flat heads of the shaft ends of the rollers according to the roller core positions of the rollers in the roller system, thereby ensuring the smoothness of the insertion of the two, effectively protecting the transmission shafts and rollers from damage, and extending the service life.

Description

Technical Field

[0001] The invention relates to steel rolling equipment, in particular to a transmission device of a vertical rolling mill used for a transmission shaft of the rolling mill. Background Art

[0002] The power transmission method of the rolling mill is as follows: the main drive motor is connected to the roller through the gear box, the transmission shaft and the roller to achieve transmission. The roller will produce fatigue wear or damage after long-term use, which requires maintenance or replacement of the roller. Before the roller is pulled out of the frame, one end of the transmission shaft is connected to the gear box through a universal shaft, and the flat head sleeve at the other end is connected to the flat head of the roller. The transmission shaft is supported by the roller and the gear box together; when the roller is pulled out of the frame, the roller is separated from the transmission shaft. At this time, the end of the transmission shaft close to the roller side has no support and is in a suspended state, and the position of the flat head of the transmission shaft cannot be maintained. Corresponding to the roller, the transmission shaft includes a horizontal rolling mill transmission shaft with a shaft core in the horizontal direction and a vertical rolling mill transmission shaft with a shaft core in the vertical direction. For the drive shaft of a vertical rolling mill, when connected to different rolls, the roll core positions of different rolls may be different. If the flat head of the roll and the connecting hole at the end of the drive shaft are forcibly inserted without alignment, it is very easy to cause damage to the drive shaft and the roll. Because the traction mechanism is usually an oil cylinder, the forced application of hydraulic power may lead to assembly accidents that are difficult to avoid. Summary of the invention

[0003] The object of the present invention is to provide a transmission device which can accurately adjust the position of a transmission shaft and keep the axis core of the transmission shaft located in a vertical plane.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a transmission device of a vertical rolling mill, including a bracket, a first and a second transmission shaft arranged vertically are located in the area between the left and right brackets of the bracket, and the left and the right brackets are correspondingly provided with first strip holes, the hole length direction of the first strip holes is located in the horizontal direction and is arranged perpendicular to the axial direction of the first and the second transmission shafts, and the first and the second bearing seats are correspondingly arranged on the shaft bodies of the first and the second transmission shafts, and the connecting parts of the first and the second bearing seats form a sliding fit with the first strip holes, and the driving mechanism drives the first and the second transmission shafts to move along the direction defined by the first strip holes.

[0005] In the above scheme, when the rolling roller is separated from the transmission shaft, the bracket supports the connection parts on the first and second bearing seats, and the driving mechanism drives the first and second transmission shafts to brake along the first strip hole to the matching position of the shaft end mounting holes of the first and second transmission shafts and the flat heads of the rolling roller shaft ends according to the roller core position of the rolling roller in the roller system, thereby ensuring the smooth insertion of the two, effectively protecting the transmission shaft and the rolling roller from damage and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the structure of the present invention assembled in a rolling mill;

[0007] Figure 2 It is a structural schematic diagram of the present invention;

[0008] Figure 3 for Figure 2 The main view of

[0009] Figure 4 is a schematic diagram of the structure of the bracket;

[0010] Figure 5 It is a schematic diagram of the structure of the first / second bearing seat. DETAILED DESCRIPTION

[0011] See also Figure 1-Figure 3 A transmission device of a vertical rolling mill includes a bracket 10, a first and a second transmission shaft 21, 22 arranged vertically are located in the area between the left and right brackets 11, 12 of the bracket 10, and the left and right brackets 11, 12 are correspondingly provided with a first strip hole 13, the hole length direction of the first strip hole 13 is located in the horizontal direction and is arranged perpendicular to the axial direction of the first and the second transmission shaft 21, 22, and the first and the second bearing seats 23, 24 are correspondingly arranged on the shaft bodies of the first and the second transmission shaft 21, 22, and the connecting parts of the first and the second bearing seats 23, 24 form a sliding fit with the first strip hole 13, and the driving mechanism drives the first and the second transmission shafts 21, 22 to move along the direction defined by the first strip hole 13. When the rollers are separated from the transmission shaft, the bracket 10 supports the connection parts on the first and second bearing seats 23 and 24, and the driving mechanism then drives the first and second transmission shafts 21 and 22 to brake along the first strip hole 13 to the matching position of the shaft end mounting holes of the first and second transmission shafts 21 and 22 and the flat heads of the roller shaft ends according to the roller core positions of the rollers in the roller system, thereby ensuring the smooth insertion of the two, effectively protecting the transmission shaft and the rollers from damage and extending their service life.

[0012] Preferably, Figure 5 As shown, the connection part of the first bearing seat 23 includes an ear block 231, and an ear shaft 232 is provided at the outer end of the ear block 231. A push-pull block 31 is fixedly connected to the piston rod end of the push-pull oil cylinder 30, and a through hole 31a is provided on the push-pull oil cylinder 30. The ear shaft 232 of the first bearing seat 23 passes through the first strip hole, the through hole 13, and 31a in sequence, and the push-pull oil cylinder 30 drives the ear shaft 232 to move along the direction defined by the first strip hole 13. During assembly, the side of the ear block 231 abuts against the left and right brackets 11 and 12 to prevent the first and second transmission shafts 21 and 22 from shaking in the left and right directions (i.e., the axial direction of the ear shaft 232), and the movement of the push-pull block 31 drives the ear shaft 232 to move to the specified position along the first strip hole 13.

[0013] In order to ensure that the first and second transmission shafts 21, 22 can smoothly transmit torque after the flat head sleeves of the shaft ends of the rollers are completed, the through hole 31a is a strip hole, the length direction of the strip hole is arranged in the vertical direction, and the hole width is consistent with the diameter of the ear shaft 232. The push-pull cylinder 30 drives the push-pull block 31 to move up or down until the ear shaft 232 is in the middle position of the strip hole, so that the push-pull block 31 cannot interfere with the displacement of the ear shaft 232 in the vertical direction, ensuring that the first and second transmission shafts 21, 22 can smoothly transmit torque. The purpose of arranging the length direction of the strip hole in the vertical direction is to avoid damage to the piston rod and cylinder body of the push-pull cylinder 30 when there is axial movement in the operation of the first and second transmission shafts 21, 22.

[0014] Furthermore, the first and second bearing seats 23, 24 and their connecting parts have the same structure.

[0015] Further, such as Figure 4 As shown, the left and right brackets 11, 12 have the same structure and are arranged relatively. The left bracket 11 includes a bottom plate 111 that directly forms a sliding fit with the foundation A and whose plate surface is located in the vertical direction. A vertical plate 112 that is perpendicular to the bottom plate 111 is provided on one side of the plate surface of the bottom plate 111. The first strip hole 13 is provided on the vertical plate 112. The vertical plate 112 is also provided with a baffle 14, which limits the displacement of the first and second bearing seats 23, 24 in the axial direction of the first and second transmission shafts 21, 22. The baffle 14 abuts against both sides of the ear block 231 to limit the shaking of the ear block 231 in the axial direction of the transmission shaft.

[0016] After the flat head of the rolling roller is connected with the flat head hole of the drive shaft, the drive shaft needs to be moved to the rolling center on the foundation together with the roller system and the rolling mill frame. A wear-resistant plate 113 is provided on the back panel surface of the bottom plate 111. The main body of the wear-resistant plate 113 is connected to the bottom plate 111. The inner side of the main body is provided with a convex strip extending toward the foundation A. The length direction of the convex strip is consistent with the axial direction of the first and second drive shafts 21 and 22. The convex strip and the back panel surface of the main body together constitute a matching surface for sliding fit with the track at the bottom of the rolling mill frame. The matching surface of the convex strip and the track is an inclined surface. The inclined contact moving fit between the track and the convex strip can not only play the role of sliding fit, but also play the role of guidance.

[0017] When the positioning hole on the side of the vertical plate 112 near the rolling mill frame is aligned with the positioning hole at the corresponding position on the rolling mill frame, the latch has a second positioning pin 15. After the flat head of the roller is sleeved with the flat head hole of the transmission shaft end, the second positioning pin 15 is actuated to determine the positions of each other.

[0018] The left and right vertical plates 112 are connected by a connecting plate 16, which connects the left and right brackets 11 and 12 into a whole. The connecting plate 16 is in an I-shape as a whole, and a missing portion 161 is opened in the middle of the connecting plate 16 to avoid the positions of the first and second transmission shafts 21 and 22.

[0019] In order to ensure the alignment and insertion of the shaft end mounting holes of the first and second transmission shafts 21 and 22 and the flat heads at the shaft ends of the rollers, a flat head holding mechanism is also provided at the flat heads, and a push-pull oil cylinder 40 is also provided on the vertical plate 112, and the piston rod length of the push-pull oil cylinder 40 is arranged parallel to the axis direction of the first and second transmission shafts 21 and 22. The push-pull oil cylinder 40 is provided to release the limit of the flat head by the flat head holding mechanism, so as to avoid interference with the alignment and insertion of the shaft end mounting holes of the transmission shaft and the flat heads at the shaft ends of the rollers.

Claims

1. A transmission device for a vertical rolling mill, characterized in that: The invention comprises a bracket (10), first and second transmission shafts (21, 22) arranged vertically are located in the area between the left and right brackets (11, 12) of the bracket (10), first strip holes (13) are correspondingly arranged on the left and right brackets (11, 12), the hole length direction of the first strip holes (13) is located in the horizontal direction and is arranged perpendicular to the axis direction of the first and second transmission shafts (21, 22), and first and second bearings are correspondingly arranged on the shaft bodies of the first and second transmission shafts (21, 22). The first and second bearing seats (23, 24) are provided with connecting parts that form a sliding fit with the first strip hole (13); the connecting part of the first bearing seat (23) includes an ear block (231), and the outer end of the ear block (231) is provided with an ear shaft (232); the piston rod end of the push-pull oil cylinder (30) is fixedly connected with a push-pull block (31), and the push-pull block (31) is provided with a through hole (31a); the ear shaft (232) of the first bearing seat (23) passes through the first strip hole (13) is rearwardly arranged in the through hole (31a), and the push-pull oil cylinder (30) drives the ear shaft (232) to move along the direction defined by the first strip hole (13); the left and right brackets (11, 12) have the same structure and are arranged relative to each other, the left bracket (11) includes a bottom plate (111) that directly forms a sliding fit with the foundation A and whose plate surface is located in the vertical direction, a vertical plate (112) is arranged on one side of the plate surface of the bottom plate (111) and is perpendicular to the bottom plate (111), and the first strip hole (13) is arranged A baffle (14) is also provided on the vertical plate (112), and the baffle (14) limits the displacement of the first and second bearing seats (23, 24) in the axial direction of the first and second transmission shafts (21, 22); a push-pull oil cylinder (40) is also provided on the vertical plate (112), and the piston rod of the push-pull oil cylinder (40) is arranged in parallel with the axial direction of the first and second transmission shafts (21, 22), and the push-pull oil cylinder (40) is used to release the limit of the flat head by the flat head holding mechanism.

2. The transmission device of the vertical rolling mill according to claim 1, characterized in that: The through hole (31a) is a strip-shaped hole, the length direction of the strip-shaped hole is arranged in the vertical direction, and the hole width is consistent with the diameter of the ear shaft (232).

3. The transmission device of the vertical rolling mill according to claim 1, characterized in that: The first and second bearing seats (23, 24) and their connecting parts have the same structure.

4. The transmission device of the vertical rolling mill according to claim 1, characterized in that: A wear-resistant plate (113) is arranged on the back surface of the bottom plate (111); the main body of the wear-resistant plate (113) is connected to the bottom plate (111); a convex strip is arranged on the inner side edge of the main body protruding toward the foundation A; the length direction of the convex strip is consistent with the axial direction of the first and second transmission shafts (21, 22); the convex strip and the back surface of the main body together form a matching surface that forms a sliding match with the track at the bottom of the rolling mill frame; and the matching surface between the convex strip and the track is an inclined surface.

5. The transmission device of the vertical rolling mill according to claim 4, characterized in that: When a positioning hole arranged on a side of the vertical plate (112) adjacent to the rolling mill frame is aligned with a positioning hole at a corresponding position on the rolling mill frame, the latch has a second positioning pin (15).

6. The transmission device of the vertical rolling mill according to claim 5, characterized in that: The left and right vertical plates (112) are connected via a connecting plate (16) located therebetween. The connecting plate (16) is in an I-shape as a whole, and a missing portion (161) is provided in the middle of the connecting plate (16) to avoid the positions of the first and second transmission shafts (21, 22).

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