Tension roller set intelligently driven by permanent magnet motor

Abstract

A tension roller set intelligently driven by a permanent magnet motor is used for providing tension for a metal plate strip in the metallurgical industry. The double permanent magnet motor sets are connected with the tension rollers through couplings, the first tension roller and the second tension roller are installed on the left side and the right side of the upper portion of the roller set rack and arranged in a high-low staggered mode in the vertical direction, and the third tension roller and the fourth tension roller are installed on the left side and the right side of the lower portion of the roller set rack and arranged in a high-low staggered mode in the height direction. One side of the mandrel is connected with the first hub through a flat key, the other side of the mandrel is connected with the second hub, the two ends of the first radial plate are welded to the first hub and the roller respectively, the first radial plate and the first hub are in reinforced connection through the first rib plate, the two ends of the second radial plate are welded to the second hub and the roller respectively, the second radial plate and the second hub are in reinforced connection through the second rib plate, the surface of the roller is coated with the glue layer, and the supporting plate is welded to the middle of the roller. The tension control device has the advantages of high response speed, high control precision, large rotating thrust, easiness in controlling the rotating speed and the like, and the tension of the tension roller can reach dozens of tons and even more than one hundred tons.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a tension roller group intelligently driven by a permanent magnet motor. Background Art

[0002] Extra hard, hard-soft bimetal, stainless steel and expanded alloy steel are widely used in home appliances, kitchen equipment, medical equipment, metal hoses, computer accessories, mobile phones and auto parts. After cold rolling, this type of strip steel has the characteristics of high yield strength and low elongation. At the same time, due to its large internal stress, the plate surface often has defects such as buckling and wavy. The current method is generally to eliminate such defects through the combined action of tension rollers and straightening machines.

[0003] The main driving parts of the existing tension roller group are mostly composed of a common motor and a reduction gear box, and the layout of the tension rollers in the tension roller group is generally a planar layout, and multiple rollers are distributed in a straight line.

[0004] The tension roller transmits the torque output by the motor to the steel strip through friction, which is used to amplify or reduce the tension of the strip to meet the tension demand of a certain process section. The reliability requirement of the tension roller is extremely high. If a tension roller fails in a production line, the entire production line will stop running, causing an abnormal shutdown accident. Therefore, whether it is a galvanizing line, a tinning line, a rewinding line, or a pickling / pickling line, the process section of the straightening machine is the area with the greatest tension in the entire production line, especially the pickling / pickling line. Since the thickness, width and strength of the steel strip produced in this line are the largest, the tension in the process section of the descaling straightening machine is often very large, requiring the tension roller to have a large load-bearing capacity. However, in order to facilitate manufacturing and reduce weight, the existing tension rollers mostly adopt a structure in which the mandrel and the spoke are directly welded.

[0005] In summary, the existing tension roller group has certain defects, which are mainly manifested as follows:

[0006] 1. The gears in the gear reducer are easily damaged, and the speed accuracy control is not accurate enough;

[0007] 2. There are risks such as abnormal noise and oil leakage during equipment operation;

[0008] 3. The overall equipment occupies a large area and has a complex structure;

[0009] 4. The equipment manufacturing cycle is long and the operation and maintenance costs are high;

[0010] 5. Since the core shaft material of the tension roller is mostly medium carbon steel or alloy steel such as 45# or 42CrMo, and the web material is mostly low carbon steel such as Q235 or Q345, the welding performance between the two is very poor, and the welding process is very demanding, and the weld quality is difficult to guarantee. In past work practice, this tension roller can bear a small tension of less than ten tons, and its service life can basically meet the requirements; but the tension roller used in the descaling and straightening machine on the pickling / pickling production line generally needs to reach tens of tons or even hundreds of tons. This tension roller is very easy to desolder. The desoldering of the core shaft and the web is the most common failure form of the existing tension roller. Summary of the invention

[0011] In order to overcome the shortcomings of the prior art, the purpose of the invention of the utility model is to provide a tension roller group driven by a permanent magnet motor, so as to realize the integrated manufacturing of equipment drive and motor, and solve the problem of de-soldering of the core shaft and the spoke plate of the tension roller when transmitting a large torque.

[0012] To achieve the above-mentioned purpose of the invention, the tension roller group of the utility model is composed of tension roller one, tension roller two, tension roller three, tension roller four, a roller group frame, and a double permanent magnet motor group; the double permanent magnet motor group is connected to tension roller one, tension roller two, tension roller three, and tension roller four via a coupling, and tension roller one and tension roller two are installed on the upper part of the roller group frame, and tension roller three and tension roller four are installed on the lower part of the roller group frame.

[0013] Furthermore, the tension roller one and the tension roller two are respectively installed on the left and right sides of the upper part of the roller group frame, and the tension roller one and the tension roller two are arranged alternately in the vertical direction, one high and one low, and the tension roller one and the tension roller two are vertically fixed to the roller group frame through bearings with seats on both sides; the tension roller three and the tension roller four are respectively installed horizontally on the left and right sides of the lower part of the roller group frame through bearings with seats on both sides, and the tension roller three and the tension roller four are arranged alternately in the height direction, one high and one low.

[0014] Furthermore, each mounting plate on the roller group frame for mounting the seat bearing is welded with a top screw block on both sides, and the top screw block is installed with an adjustment bolt and a nut. The position of tension roller one, tension roller two, tension roller three, and tension roller four on the roller group frame can be adjusted by adjusting the length of the bolt screwed into the top screw block.

[0015] Furthermore, two permanent magnet motors are vertically installed at the upper and lower parts of the box of the dual permanent magnet motor group, the outer shell of the permanent magnet motor is fixed in the box by screws, the rotating shaft of the permanent magnet motor is connected to the coupling, and the four couplings are respectively connected to tension roller one, tension roller two, tension roller three, and tension roller four.

[0016] Furthermore, one side of the core shaft of the tension roller one, tension roller two, tension roller three, and tension roller four is connected to hub one through a flat key, and the other side is connected to hub two; one end of the spoke plate one is welded to hub one, and the other end is welded to the roller, and the connection between the spoke plate one and the hub one is reinforced by a rib plate one; one end of the spoke plate two is welded to hub two, and the other end is welded to the roller, and the connection between the spoke plate two and the hub two is reinforced by a rib plate two; the rubber layer is coated on the surface of the roller; and the support plate is welded to the middle of the roller.

[0017] Furthermore, a bearing is installed between one side of the core shaft and the bearing seat, the inner ring of the bearing is positioned by a shaft shoulder and an inner ring retaining ring, the inner ring retaining ring is locked by a stop washer and a round nut, the outer ring of the bearing is pressed and positioned by an outer ring retaining ring and bearing covers installed on both sides of the bearing seat, a lip seal is provided between the bearing cover and the core shaft, an oil cup is provided on the bearing seat, and the lubricating oil channel in the bearing seat is connected to the bearing.

[0018] Furthermore, a bearing is installed between the other side of the core shaft and the bearing seat, the inner ring of the bearing is positioned by the shaft shoulder and the shaft end baffle, lip seals are provided between the bearing cover and the bearing cover on both sides of the bearing seat, an oil cup is provided on the bearing seat, and the lubricating oil channel in the bearing seat is connected to the bearing.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] 1. The structure is simple and compact. The transmission system of the tension roller is designed to be toothless. There is no need for transmission parts such as gears and reduction boxes, and there is no need to lubricate gears. This simplifies the driving method and structure, has high transmission efficiency, and reduces energy loss.

[0021] 2. It adopts the direct drive form of permanent magnet motor, which has the advantages of fast response speed, high control accuracy, large rotation thrust, easy speed control, etc. It integrates the linearly distributed tension rollers into one, greatly reducing the footprint and length of the equipment.

[0022] 3. The existing equipment's faults such as gear damage, abnormal transmission noise, bearing damage, equipment oil leakage, etc. no longer exist, effectively reducing the maintenance pressure of the equipment.

[0023] 4. A hub is added between the mandrel and the spoke plate to improve the mutual welding performance between them, effectively avoiding the de-welding phenomenon between the original mandrel and the spoke plate, so that the tension of the tension roller can reach tens of tons or even hundreds of tons. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a simplified structural diagram of the utility model.

[0025] Figure 2 for Figure 1 A side view of the structure.

[0026] Figure 3 for Figure 2 Schematic diagram of the dual permanent magnet motor structure.

[0027] Figure 4 for Figure 1 Schematic diagram of the tension roller structure.

[0028] In the figure: 1, tension roller 1; 2, roller assembly frame; 2-1, top screw block; 2-2, bolt; 2-3, nut; 3, seat bearing; 4, double permanent magnet motor group; 4-1, box; 4-2, permanent magnet motor; 4-3, rotating shaft; 5, tension roller 2; 6, tension roller 3; 7, tension roller 4; 8, coupling; 9, mandrel; 10, flat key; 11, spoke plate 1; 12, rib plate 1; 1 3. Hub 1; 14. Roller; 15. Rubber layer; 16. Support plate; 17. Rib plate 2; 18. Spoke plate 2; 19. Hub 2; 20. Bearing cover; 21. Shaft end baffle; 22. Lip seal; 23. Bearing; 24. Oil cup; 25. Bearing seat; 26. Bearing cover; 27. Outer ring baffle; 28. Inner ring baffle; 29. ​​Stop washer; 30. Round nut; 31. Bearing cover. DETAILED DESCRIPTION

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the tension roller group of the utility model mainly consists of a tension roller 1, a tension roller 2 5, a tension roller 3 6, a tension roller 4 7, a roller group frame 2, and a dual permanent magnet motor group 4. Two permanent magnet motors 4-2 are vertically installed at the upper and lower parts of the box 4-1 of the dual permanent magnet motor group 4, respectively. The shell of the permanent magnet motor 4-2 is fixed in the box 4-1 by screws, and the rotating shaft 4-3 of the permanent magnet motor 4-2 is connected to the coupling 8. The four couplings 8 are respectively connected to the tension roller 1, the tension roller 2 5, the tension roller 3 6, and the tension roller 4 7, and each coupling 8 is connected to a corresponding tension roller; the tension roller 1 and the tension roller 2 5 are installed on the upper part of the roller group frame 2, and the tension roller 3 6 and the tension roller 4 7 are installed on the lower part of the roller group frame 2.

[0030] The tension roller 1 and the tension roller 2 5 are respectively installed on the left and right sides of the upper part of the roller group frame 2, and the tension roller 1 and the tension roller 2 5 are arranged alternately in the vertical direction, one high and one low. The tension roller 1 and the tension roller 2 5 are vertically fixed to the roller group frame 2 through the bearings 3 with seats on both sides; the tension roller 3 6 and the tension roller 4 7 are respectively installed horizontally on the left and right sides of the lower part of the roller group frame 2 through the bearings 3 with seats on both sides, and the tension roller 3 6 and the tension roller 4 7 are arranged alternately in the height direction, one high and one low.

[0031] Each mounting plate of the belt seat bearing 3 on the roller group frame 2 is welded with a top screw block 2-1 on both sides, and the top screw block 2-1 is installed with an adjusting bolt 2-2 and a nut 2-3. By adjusting the length of the bolt 2-2 screwed into the top screw block 2-1, the position of the tension roller 1, tension roller 2 5, tension roller 3 6, and tension roller 4 7 on the roller group frame 2 can be adjusted, thereby adjusting the wrap angle of the metal strip when passing through the tension roller group.

[0032] One side of the core shaft 9 of the tension roller 1, the tension roller 2 5, the tension roller 3 6 and the tension roller 4 7 is connected to the hub 13 through an interference fit through a flat key 10, and the other side is connected to the hub 2 19 through a large interference fit; one end of the spoke plate 11 is welded to the hub 13, and the other end is welded to the roller 14, and the connection between the spoke plate 11 and the hub 13 is strengthened by a rib plate 12; one end of the spoke plate 2 18 is welded to the hub 2 19, and the other end is welded to the roller 14, and the connection between the spoke plate 2 18 and the hub 2 19 is strengthened by a rib plate 2 17; the rubber layer 15 is coated on the surface of the roller 14 to increase the friction coefficient between each tension roller and the plate belt; the support plate 16 is welded to the middle part of the roller 14 to enhance the strength and rigidity of the roller 14.

[0033] A bearing 23 is installed between one side of the core shaft 9 and the bearing seat 25. The inner ring of the bearing 23 is positioned by a shaft shoulder and an inner ring retaining ring 28. The inner ring retaining ring 28 is locked by a stop washer 29 and a round nut 30. The outer ring of the bearing 23 is pressed and positioned by an outer ring retaining ring 27 and bearing covers 31 installed on both sides of the bearing seat 25. A lip seal 22 is provided between the bearing cover 31 and the core shaft 9. An oil cup 24 is provided on the bearing seat 25. The lubricating oil channel in the bearing seat 25 is communicated with the bearing 23; a bearing 23 is installed between the other side of the core shaft 9 and the bearing seat 25. The inner ring of the bearing 23 is positioned by a shaft shoulder and a shaft end baffle 21. A lip seal 22 is provided between the bearing cover 20 and the bearing cover 26 on both sides of the bearing seat 25. An oil cup 24 is provided on the bearing seat 25. The lubricating oil channel in the bearing seat 25 is communicated with the bearing 23.

Claims

1. A tension roller group driven by a permanent magnet motor, characterized in that: The tension roller group comprises a tension roller one (1), a tension roller two (5), a tension roller three (6), a tension roller four (7), a roller group frame (2), and a double permanent magnet motor group (4); the double permanent magnet motor group (4) is connected to the tension roller one (1), the tension roller two (5), the tension roller three (6), and the tension roller four (7) via a coupling (8); the tension roller one (1) and the tension roller two (5) are mounted on the upper part of the roller group frame (2), and the tension roller three (6) and the tension roller four (7) are mounted on the lower part of the roller group frame (2).

2. The tension roller group driven by the permanent magnet motor according to claim 1 is characterized in that: The tension roller one (1) and the tension roller two (5) are respectively mounted on the left and right sides of the upper part of the roller assembly frame (2); the tension roller one (1) and the tension roller two (5) are arranged in a staggered manner with one high and one low in the vertical direction; the tension roller one (1) and the tension roller two (5) are respectively vertically fixed to the roller assembly frame (2) through bearings (3) with seats on both sides; the tension roller three (6) and the tension roller four (7) are respectively horizontally mounted on the left and right sides of the lower part of the roller assembly frame (2) through bearings (3) with seats on both sides; the tension roller three (6) and the tension roller four (7) are arranged in a staggered manner with one high and one low in the height direction.

3. The tension roller group driven by the permanent magnet motor according to claim 1 is characterized in that: Each mounting plate on the roller assembly frame (2) for mounting a seat bearing (3) is welded with a top screw block (2-1) on both sides, and an adjustment bolt (2-2) and a nut (2-3) are mounted on the top screw block (2-1). The position of the tension roller one (1), the tension roller two (5), the tension roller three (6), and the tension roller four (7) on the roller assembly frame (2) is adjusted by screwing the adjustment bolt (2-2) into the top screw block (2-1).

4. The tension roller group driven by the permanent magnet motor according to claim 1 is characterized in that: Two permanent magnet motors (4-2) are vertically mounted at the upper and lower parts of the housing (4-1) of the dual permanent magnet motor group (4); the housing of the permanent magnet motor (4-2) is fixed to the housing (4-1) by screws; the rotating shaft (4-3) of the permanent magnet motor (4-2) is connected to a coupling (8); and the four couplings (8) are respectively connected to a tension roller one (1), a tension roller two (5), a tension roller three (6), and a tension roller four (7).

5. The tension roller group driven by the permanent magnet motor according to claim 1 is characterized in that: One side of the core shaft (9) of the tension roller one (1), the tension roller two (5), the tension roller three (6) and the tension roller four (7) is connected to the hub one (13) through a flat key (10), and the other side is connected to the hub two (19); one end of the spoke plate one (11) is welded to the hub one (13), and the other end is welded to the roller (14), and the connection between the spoke plate one (11) and the hub one (13) is strengthened by a rib plate one (12); one end of the spoke plate two (18) is welded to the hub two (19), and the other end is welded to the roller (14), and the connection between the spoke plate two (18) and the hub two (19) is strengthened by a rib plate two (17); the adhesive layer (15) is coated on the surface of the roller (14); and the support plate (16) is welded to the middle of the roller (14).

6. The tension roller group driven by the permanent magnet motor according to claim 5 is characterized in that: A bearing (23) is arranged between one side of the spindle (9) and the bearing seat (25); the inner ring of the bearing (23) is positioned by a shaft shoulder and an inner ring retaining ring (28); the inner ring retaining ring (28) is locked by a stop washer (29) and a round nut (30); the outer ring of the bearing (23) is pressed and positioned by an outer ring retaining ring (27) and bearing covers (31) arranged on both sides of the bearing seat (25); a lip seal (22) is arranged between the bearing cover (31) and the spindle (9); an oil cup (24) is arranged on the bearing seat (25); and a lubricating oil passage in the bearing seat (25) is communicated with the bearing (23).

7. The tension roller group driven by the permanent magnet motor according to claim 5 is characterized in that: A bearing (23) is arranged between the other side of the core shaft (9) and the bearing seat (25); the inner ring of the bearing (23) is positioned by a shaft shoulder and a shaft end baffle (21); lip seals (22) are arranged between the bearing cover (20) and the bearing cover (26) on both sides of the bearing seat (25); an oil cup (24) is arranged on the bearing seat (25); and a lubricating oil passage in the bearing seat (25) is communicated with the bearing (23).

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