A punch roll gap adjustment device

Abstract

The utility model discloses a kind of roll gap adjusting devices of perforating machine, it is related to the technical field of perforating machine, including driving component, the output end of the driving component is fixedly connected with first reduction gearbox group, rotating shaft is provided in the first reduction gearbox group, the first reduction gearbox group is connected with second reduction gearbox group by multiple universal shafts, the second reduction gearbox group is arranged at the side of the first reduction gearbox group, characterized in that, multiple universal couplings are provided in the second reduction gearbox group, the universal coupling at least part of reduction gearbox in the second reduction gearbox group is connected with each other, by being provided with universal coupling, the four support point reduction gearbox couplings of upper and lower roll gap adjustment of perforating machine are changed from positioning fixed type to universal coupling type, the problem that positioning fixed type is dislocated and cannot be adjusted is solved, after being changed to universal coupling type, maintenance gas cutting and other fault downtime are solved, long-time downtime caused by specification change adjustment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of roller gap adjustment technology for the main machine of a piercing mill on a hot-rolled seamless steel pipe production line, and in particular to a roller gap adjustment device for a piercing mill. Background Technology

[0002] Currently, piercing machines require multiple adjustments to the gap between the upper and lower rollers to meet the demand for pierced tubes of different specifications, based on the production plan. Since the four support points of each roller need to be horizontally positioned and the gearbox is connected using a positioning coupling, deviations in the four support points after multiple adjustments can lead to misalignment of the coupling, making adjustment difficult, frequently causing adjustment failures and wasting adjustment time. Differences in the adjusted roller gap can also lead to potential defects in the surface quality of the pierced tubes, affecting production efficiency and downtime. Therefore, we propose a roller gap adjustment device for piercing machines to solve the above problems. Utility Model Content

[0003] This invention provides a roller gap adjustment device for a piercing machine, which solves the technical problems of low adjustment quality, long adjustment time, and high failure frequency of the upper and lower roller gaps in current piercing machines.

[0004] To solve the above-mentioned technical problems, this utility model provides a roller gap adjustment device for a piercing machine, including a driving component. The output end of the driving component is fixedly connected to a first gearbox group. A rotating shaft is provided in the first gearbox group. The first gearbox group is connected to a second gearbox group through multiple universal joints. The second gearbox group is located on one side of the first gearbox group. The second gearbox group is characterized in that multiple universal couplings are provided in the second gearbox group, and the universal couplings connect at least some of the gearboxes in the second gearbox group to each other.

[0005] Preferably, the second gearbox assembly includes gearbox three, gearbox four, gearbox five, and gearbox six, and gearbox three and gearbox four, as well as gearbox five and gearbox six, are connected by the universal coupling.

[0006] The above technical solution is adopted: the second gearbox group includes gearbox three, gearbox four, gearbox five and gearbox six. Gearbox three and gearbox four, as well as gearbox five and gearbox six, are connected by universal couplings. The gearbox couplings of the four support points for adjusting the upper and lower roller gaps of the piercing machine are changed from fixed positioning type to universal coupling type, which solves the problem that the fixed positioning type cannot be adjusted after misalignment.

[0007] Preferably, the first gearbox assembly includes a first gearbox and a second gearbox. The first gearbox is fixedly connected to the output end of the drive component, and the first gearbox and the second gearbox are fixedly connected through the rotating shaft.

[0008] The above technical solution is adopted: the first gearbox group includes gearbox one and gearbox two. Gearbox one is fixedly connected to the output end of the drive component, and gearbox one and gearbox two are fixedly connected by a rotating shaft to ensure that the gearbox one, gearbox two, and gearbox one are stably connected to the output of the drive component.

[0009] Preferably, universal joints are provided between the first gearbox and the third gearbox, and between the second gearbox and the fourth gearbox.

[0010] The above technical solution involves installing universal joints between gearbox one and gearbox three, and between gearbox two and gearbox four.

[0011] Preferably, the third and fourth gearboxes are located on a first horizontal line, and the fifth and sixth gearboxes are located on a second horizontal line, with the first and second horizontal lines being parallel.

[0012] The above technical solution is adopted: gearboxes three and four are located on the first horizontal line, and gearboxes five and six are located on the second horizontal line, with the first horizontal line and the second horizontal line being parallel.

[0013] Compared with related technologies, this utility model has the following beneficial effects: 1. Compared to traditional piercing mill roll gap adjustment devices, this utility model, by incorporating universal couplings, changes the fixed-position type of the gearbox couplings at the four support points of the upper and lower roll gap adjustment to a universal coupling type. This solves the problem of inability to adjust after misalignment in the fixed-position type. The universal coupling type also reduces downtime caused by maintenance issues such as gas cutting, and avoids prolonged downtime due to size changes. Each time the piercing roll is replaced, the four support points are horizontally measured, calibrated, and adjusted, resolving the centering issue and reducing potential problems caused by height differences among the four support points. This piercing mill roll gap adjustment device adjusts the upper and lower roll gaps to meet the piercing requirements of different specifications before the tube blank is passed through and sent to the rolling mill. It improves the quality of upper and lower roll gap adjustment, reduces adjustment time and downtime due to malfunctions, significantly reduces the frequency of malfunctions, saves maintenance costs, effectively corrects surface defects after tube blank piercing, significantly improves quality, and increases production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a roller gap adjustment device for a perforating machine. Figure 2 This is a schematic diagram showing the connection between the rotating shaft and two reduction gearboxes in a roller gap adjustment device for a perforating machine. Figure 3 This is an enlarged view of point B in a roller gap adjustment device for a perforating machine.

[0015] Numbered in the diagram: 1. Drive component; 2. First gearbox assembly; 21. Gearbox 1; 22. Gearbox 2; 3. Rotating shaft; 4. Second gearbox assembly; 41. Gearbox 3; 42. Gearbox 4; 43. Gearbox 5; 44. Gearbox 6; 5. Universal coupling; 6. Universal shaft; 7. Snap-fit ​​assembly; 71. Concave groove block; 72. Convex block; 8. Fastener; 81. Rod body; 82. Anti-detachment washer; 83. Nut. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example 1

[0017] like Figures 1-3 As shown, a roller gap adjustment device for a piercing machine includes a drive component 1. The output end of the drive component 1 is fixedly connected to a first gearbox assembly 2. A rotating shaft 3 is provided inside the first gearbox assembly 2. The first gearbox assembly 2 is connected to a second gearbox assembly 4 through multiple universal joints 6. The second gearbox assembly 4 is located on one side of the first gearbox assembly 2. Multiple universal couplings 5 ​​are provided inside the second gearbox assembly 4. The universal couplings 5 ​​connect at least some of the gearboxes in the second gearbox assembly 4 to each other. The output end of the drive component 1 is fixedly connected to a first gearbox assembly 2. A rotating shaft 3 is installed inside the first gearbox assembly 2. The first gearbox assembly 2 is connected to a second gearbox assembly 4 via multiple universal joints 6. The second gearbox assembly 4 is located on one side of the first gearbox assembly 2. Multiple universal couplings 5 ​​are installed inside the second gearbox assembly 4. The universal couplings 5 ​​are of model SWC75BH disc type, which are commercially available parts. The universal couplings 5 ​​connect at least some of the gearboxes within the second gearbox assembly 4 to each other. Through the installation of the universal couplings 5, the upper and lower rollers of the piercing machine... The gearbox couplings at the four support points were changed from fixed-position couplings to universal couplings. This solved the problem of inability to adjust after misalignment with the fixed-position couplings. The universal couplings also reduced downtime due to maintenance issues like gas cutting and prevented prolonged downtime caused by size changes. Each time the piercing roll is replaced, the four support points are horizontally measured, calibrated, and adjusted, resolving the centering issue and reducing potential problems caused by height differences. This piercing mill roll gap adjustment device adjusts the upper and lower roll gaps to meet the piercing requirements of different specifications before the tube blank is passed through and sent to the rolling mill. This improved the quality of the upper and lower roll gap adjustment, reduced adjustment time and downtime due to malfunctions, significantly reduced the frequency of malfunctions, saved maintenance costs, effectively corrected surface defects after tube blank piercing, significantly improved quality, and increased production efficiency. Example 2

[0018] like Figures 1-3 As shown, the second gearbox group 4 includes gearbox three 41, gearbox four 42, gearbox five 43 and gearbox six 44. Gearbox three 41 and gearbox four 42, as well as gearbox five 43 and gearbox six 44, are connected by universal couplings 5. The universal couplings 5 ​​are disc SWC 75BH models. These universal couplings 5 ​​are commercially available parts and are used to adapt the connection between gearbox three 41 and gearbox four 42, as well as between gearbox five 43 and gearbox six 44. The gearbox couplings at the four support points for adjusting the upper and lower roller gaps of the piercing machine have been changed from fixed positioning type to universal coupling type, which solves the problem of inability to adjust after misalignment of the fixed positioning type. like Figure 1 As shown, the first gearbox group 2 includes a first gearbox 21 and a second gearbox 22. The first gearbox 21 is fixedly connected to the output end of the drive component 1. The first gearbox 21 and the second gearbox 22 are fixedly connected through a rotating shaft 3 to ensure that the first gearbox 21, the second gearbox 22, and the output connection between the first gearbox 21 and the drive component 1 are stable. like Figure 1As shown, universal joints 6 are provided between gearbox 1 21 and gearbox 3 41, and between gearbox 2 22 and gearbox 42. Gearbox 3 41 and gearbox 42 are located on the first horizontal line, and gearbox 5 43 and gearbox 6 44 are located on the second horizontal line. The first horizontal line is parallel to the second horizontal line. like Figure 2 , Figure 3 As shown, in order to ensure that the gearbox 1 21 and gearbox 22 are firmly fixedly connected by the rotating shaft 3, quick to assemble, and easy to disassemble, a snap-fit ​​assembly 7 is provided at both ends of the rotating shaft 3 between the gearbox 1 21 and the gearbox 22. The snap-fit ​​assembly 7 includes a convex block 72 provided at the end of the rotating shaft 3 and a concave groove block 71 provided on the gearbox 1 21 and the gearbox 22. When the two ends of the rotating shaft 3 are connected to the gearbox 1 21 and the gearbox 22, the convex block 72 at the end of the rotating shaft 3 is snapped into the concave groove block 71, and then the fastener 8 is fixed through the convex block 72 and the concave groove block 71, so that the quick connection and fixation between the rotating shaft 3 and the gearbox 1 21 and the gearbox 22 can be achieved. like Figure 2 , Figure 3 As shown, the fastener 8 is a rod 81 with threaded structures at both ends. When the fastener 8 is passed through the convex block 72 and the concave groove block 71, the anti-loosening washer 82 is sleeved on the end of the fastener 8, and then the nut 83 is threadedly connected to the end of the fastener 8. This can achieve a tight connection between the rotating shaft 3 and the first gearbox 21 and the second gearbox 22, and at the same time prevent the nut 83 from loosening during the long-term rotation of the rotating shaft 3.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roller gap adjustment device for a perforating machine, comprising a drive component (1), wherein a first gearbox assembly (2) is fixedly connected to the output end of the drive component (1), a rotating shaft (3) is provided inside the first gearbox assembly (2), and a second gearbox assembly (4) is connected to the first gearbox assembly (2) via multiple universal joints (6), the second gearbox assembly (4) being disposed on one side of the first gearbox assembly (2), characterized in that, The second gearbox assembly (4) is provided with a plurality of universal couplings (5), which connect at least some of the gearboxes in the second gearbox assembly (4) to each other.

2. The piercing machine roll gap adjustment device according to claim 1, characterized in that, The second gearbox group (4) includes gearbox three (41), gearbox four (42), gearbox five (43) and gearbox six (44). Gearbox three (41) and gearbox four (42) are connected to each other and gearbox five (43) and gearbox six (44) are connected by the universal coupling (5).

3. The piercing machine roller gap adjustment device according to claim 2, characterized in that, The first gearbox assembly (2) includes a first gearbox (21) and a second gearbox (22). The first gearbox (21) is fixedly connected to the output end of the drive component (1), and the first gearbox (21) and the second gearbox (22) are fixedly connected through the rotating shaft (3).

4. The piercing machine roller gap adjustment device according to claim 3, characterized in that, Universal joints (6) are provided between the first gearbox (21) and the third gearbox (41), and between the second gearbox (22) and the fourth gearbox (42).

5. The piercing machine roller gap adjustment device according to claim 2, characterized in that, The third (41) and the fourth (42) gearboxes are located on the first horizontal line, and the fifth (43) and the sixth (44) gearboxes are located on the second horizontal line. The first horizontal line is parallel to the second horizontal line.

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