Replacing and positioning device for back-up rolls of six-roll reversible rolling mill

Abstract

The utility model discloses a six-roller reversible mill supporting roller replacing and positioning device, and relates to the technical field of reversible mills, and the six-roller reversible mill supporting roller replacing and positioning device comprises supporting frames located on the two sides of a lower supporting roller moving rail; the two first telescopic cylinders form a group and are horizontally arranged, each supporting frame is provided with one group, the two first telescopic cylinders in each group are located on the same horizontal plane, and piston rods face the supporting frame on the other side; the abutting wheel is rotationally connected to the end of a piston rod of the first telescopic cylinder and used for abutting against the side wall of the supporting roller. After the piston rod of the first telescopic cylinder extends out, the abutting wheel and the supporting roller abut against the position over the rail. The device has the effect of improving the replacement efficiency and safety of the supporting rollers of the six-roller reversible rolling mill.

Description

Technical Field

[0001] This application relates to the technical field of reversible rolling mills, and in particular to a support roll replacement and positioning device for a six-roll reversible rolling mill. Background Technology

[0002] The six-roll reversible rolling mill is a type of large rolling mill, and its support rolls need to be replaced every 10-12 days.

[0003] When replacing the support rolls in a six-high reversible rolling mill, after releasing the fixing of the lower support roll, it can be moved out of the mill via a track below it. Then, an overhead crane lifts the lower support roll and places the new one onto the track. During this process, workers need to observe whether the lower support roll is aligned with the track and adjust it using the overhead crane. Therefore, there are certain safety hazards involved in the support roll replacement process. Utility Model Content

[0004] The purpose of this utility model application is to improve the problem of high safety hazards during the replacement of support rolls in a six-roll reversible rolling mill. This application provides a support roll replacement and positioning device for a six-roll reversible rolling mill.

[0005] The technical solution of the support roll replacement and positioning device for a six-roll reversible rolling mill provided in this application is as follows:

[0006] A support roll replacement and positioning device for a six-roll reversible rolling mill, comprising:

[0007] The support frame is located on both sides of the lower support roller moving track;

[0008] The first telescopic cylinder, two are set together, horizontally, and one set is installed on each support frame. The two first telescopic cylinders in each set are located on the same horizontal plane, and the piston rods face the support frame on the other side.

[0009] The abutment wheel is rotatably connected to the end of the piston rod of the first telescopic cylinder and is used to abut against the side wall of the support roller;

[0010] After the piston rod of the first telescopic cylinder extends, the abutment wheel and the support roller abut against the position directly above the track.

[0011] Optionally, a second telescopic cylinder is installed above the first telescopic cylinder on the support frame. The second telescopic cylinder is also in pairs. The abutment wheel is also installed on the piston rod of the second telescopic cylinder. After the piston rod of the second telescopic cylinder extends, the abutment wheel can abut against the upper support roller.

[0012] Optionally, a support plate is fixed to the bottom of the piston rod of the second telescopic cylinder. When the piston rod of the second telescopic cylinder extends to the abutting wheel and abuts against the upper support roller, the support plate abuts against the side wall of the placement frame between the upper support roller and the lower support roller.

[0013] Optionally, the bottom of the support plate extends toward the support frame and slides into connection with the support frame.

[0014] Optionally, the support frame is equipped with a slide rail that is slidably connected to the support plate.

[0015] Optionally, an extension arc plate is fixed to the end of the support plate.

[0016] Optionally, the support plate can be hollowed out to form a frame structure.

[0017] Optionally, the support frame may have a guardrail on the side facing the guide rail.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] The overhead crane lifts the new lower support roller and moves it between the two support frames and lowers it. When it moves between the first telescopic cylinders, the piston rod of the first telescopic cylinder extends and abuts against the two sides of the lower support roller through the abutment wheel, driving the lower support roller to move to the position opposite to the lower guide rail. Then, the lower support roller is lowered, which effectively improves the safety and efficiency of the lower support roller replacement.

[0020] After the second telescopic cylinder extends, it can drive the new upper support roller to move directly above the required installation position via the abutment wheel, thereby improving the efficiency and safety of replacing and installing the upper support roller.

[0021] During the extension of the piston rod of the second telescopic cylinder, it can also abut against the side wall of the placement frame between the upper and lower support rollers through the support plate, thereby supporting the placement frame and improving the stability of the upper support roller placement.

[0022] The hollow design of the support board can effectively reduce its own weight and improve its structural strength through the frame structure.

[0023] The slide rails provide stable support for the support plate, thereby improving the stability of the support plate's movement. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0025] Figure 2 This is a schematic diagram showing the extended state of the second telescopic piston rod.

[0026] In the diagram, 1 is the support frame; 11 is the guardrail; 12 is the slide rail; 2 is the first telescopic cylinder; 21 is the abutment wheel; 3 is the second telescopic cylinder; 4 is the support plate; and 41 is the extension arc plate. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-2This application will be described in further detail.

[0028] This application discloses a support roll replacement and positioning device for a six-roll reversible rolling mill.

[0029] refer to Figure 1 The six-roll reversible rolling mill support roll replacement and positioning device includes a support frame 1, a first telescopic cylinder 2, and a second telescopic cylinder 3. The support frame 1 is positioned on both sides of the track through which the lower support roll moves. Two first telescopic cylinders 2 are grouped together, with one group installed on each support frame 1. The two first telescopic cylinders 2 in each group are horizontally positioned on the same horizontal plane, with the piston rod end of the first telescopic cylinder 2 facing the other support frame 1. An abutment wheel 21 is rotatably connected to the piston rod end of the first telescopic cylinder 2, and the rotation shaft of the abutment wheel 21 is horizontally positioned. After the piston rod of the first telescopic cylinder 2 extends to a set length, the abutment wheel 21 can abut against the side wall of the lower support roll and move the lower support roll to the position directly above the guide rail where it is to be placed. A guardrail 11 is provided on the upper surface of the support frame 1 on the side closest to the track.

[0030] When replacing the lower support roll of the rolling mill, the lower support roll is transported out via a track and lifted away by an overhead crane. The new lower support roll is lifted by the overhead crane between the two support frames 1 and lowered. When it is lowered to the corresponding position of the first telescopic cylinder 2, the piston rod of the first telescopic cylinder 2 extends, abuts against the side wall of the lower support roll via the abutment wheel 21, and moves the lower support roll to the required position. Then, the lower support roll is lowered onto the corresponding track. This process does not require workers to observe or make fine adjustments, which not only improves the efficiency of lower support roll placement but also improves the safety of lower support roll replacement.

[0031] refer to Figure 2 The second telescopic cylinder 3 is also installed in pairs, with one set mounted on each support frame 1. The second telescopic cylinder 3 is located directly above the first telescopic cylinder 2, and the piston rod faces the same direction as the piston rod of the first telescopic cylinder 2. The piston rod of the second telescopic cylinder 3 is also equipped with an abutment wheel 21. After the piston rod of the second telescopic cylinder 3 extends to a predetermined length, the abutment wheel 21 can abut against the upper support roller, so that the upper support roller is directly above the position it should be placed in.

[0032] A support plate 4 is fixed to the bottom of the piston rod of the second telescopic cylinder 3. The support plate 4 extends downward and then extends towards the support frame 1 on the other side. An extension arc plate 41 is fixed to one end of the support plate 4 facing the support frame 1 on the other side. After the piston rod of the second telescopic cylinder 3 extends to the set length, the extension arc plate 41 abuts against the side wall of the placement frame between the lower support roller and the upper support roller, so that the placement frame is located in the middle position on the upper surface of the lower support roller. The bottom of the support plate 4 extends in the opposite direction to the extension arc plate 41. The support frame 1 is equipped with a slide rail 12, and the bottom of the support plate 4 is slidably connected to the slide rail 12. The support plate 4 is hollow and has a frame structure.

[0033] After the lower support roller is placed, the placement frame is hoisted above it by an overhead crane. The crane then hoists the upper support roller to a position opposite the second telescopic cylinder 3. The piston rod of the second telescopic cylinder 3 extends, and the abutment wheel 21 abuts against the upper support roller, moving it to the corresponding position. Simultaneously, the extension arc plate 41 abuts against the placement frame, moving it to the middle position of the upper support roller and maintaining stability. The overhead crane then lowers the upper support roller onto the placement frame, improving the safety and stability of the upper support roller replacement. Maintaining contact with the placement frame during this process enhances the stability of the placement frame's position during the placement of the upper support roller. Furthermore, the piston rod of the second telescopic cylinder 3 extends, simultaneously positioning both the placement frame and the upper support roller. The slide rail 12 effectively improves the stability of the support plate 4's movement and provides support for it. The hollow frame structure of the support plate 4 ensures structural stability while reducing its own weight.

[0034] The implementation principle of the support roll replacement and positioning device for a six-roll reversible rolling mill according to this application embodiment is as follows: When replacing the support roll, the disassembled support roll is moved out of the equipment via a track, and the replaced support roll is lifted away by an overhead crane. Then, the overhead crane moves the new lower support roll between the two support frames 1 and lowers it to a position opposite to the first telescopic cylinder 2. The piston rod of the first telescopic cylinder 2 extends, and the lower support roll is moved to the corresponding position via the abutment wheel 21. The lower support roll is then lowered and released, improving the efficiency and safety of the lower support roll replacement and lowering. Subsequently, the overhead crane places the placement frame on the lower support roll and moves the upper support roll between the two support frames 1. When the upper support roll is opposite to the second telescopic cylinder 3, the piston rod of the second telescopic cylinder 3 extends, abuts against the upper support roll via the abutment wheel 21, and moves to the corresponding position. Simultaneously, the extension arc plate 41 moves to the middle position of the upper support roller and provides stable support after contacting the placement frame. The overhead crane releases the upper support roller after placement, and then the second telescopic cylinder 3 resets and moves the upper and lower support rollers into the equipment via the track for re-fixing, completing the support roller replacement of the six-roll reversible mill. This improves the safety and efficiency of support roller replacement.

[0035] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A support roll replacement and positioning device for a six-roll reversible rolling mill, characterized in that: include Support frame (1) is located on both sides of the lower support roller moving track; The first telescopic cylinder (2) is set in groups of two and is horizontally arranged. Each support frame (1) has a set of two first telescopic cylinders (2) in each group located on the same horizontal plane, with the piston rod facing the support frame (1) on the other side. The abutting wheel (21) is rotatably connected to the end of the piston rod of the first telescopic cylinder (2) for abutting against the side wall of the support roller; After the piston rod of the first telescopic cylinder (2) extends, the abutment wheel (21) and the support roller abut against the position directly above the track.

2. The support roll replacement and positioning device for a six-roll reversible rolling mill according to claim 1, characterized in that: The support frame (1) has a second telescopic cylinder (3) installed above the first telescopic cylinder (2). The second telescopic cylinder (3) is also in pairs. The abutment wheel (21) is also installed on the piston rod of the second telescopic cylinder (3). After the piston rod of the second telescopic cylinder (3) extends, the abutment wheel (21) can abut against the upper support roller.

3. The support roll replacement and positioning device for a six-roll reversible rolling mill according to claim 2, characterized in that: The piston rod of the second telescopic cylinder (3) is fixed with a support plate (4). When the piston rod of the second telescopic cylinder (3) extends to the abutting wheel (21) and abuts against the upper support roller, the support plate (4) abuts against the side wall of the placement frame between the upper support roller and the lower support roller.

4. The support roll replacement and positioning device for a six-roll reversible rolling mill according to claim 3, characterized in that: The bottom of the support plate (4) extends toward the support frame (1) and slides to connect with the support frame (1).

5. The support roll replacement and positioning device for a six-roll reversible rolling mill according to claim 4, characterized in that: The support frame (1) is equipped with a slide rail (12) that is slidably connected to the support plate (4).

6. The support roll replacement and positioning device for a six-roll reversible rolling mill according to claim 4, characterized in that: An extension arc plate (41) is fixed at the end of the support plate (4).

7. The support roll replacement and positioning device for a six-roll reversible rolling mill according to claim 4, characterized in that: The support board (4) is hollow and has a frame structure.

8. The support roll replacement and positioning device for a six-roll reversible rolling mill according to claim 1, characterized in that: The support frame (1) has a guardrail (11) on the side facing the guide rail.

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