Torque support for supporting drive torque and roller arrangement with torque support

Abstract

The invention relates to a torque support for supporting the drive torque of at least one shaft drive, comprising two first force transmission elements (9), which are each rotatably and spaced apart from one another fixed with a first end (11) on the shaft drive (5), a support element (17) arranged spaced apart from the shaft drive, on which the first force transmission elements are each rotatably and spaced apart from one another fixed with a second end (12) opposite the first end, and two second force transmission elements (10), which are each rotatably and spaced apart from one another fixed with a first end (13) on the support element (17) and with a second end (14) opposite the first end each rotatably and spaced apart from one another on a fixed element independent of the shaft drive (5). Furthermore, a corresponding roller arrangement is described.

Description

[0001] This application is a divisional application of Chinese invention patent application 202180020740.X, filed on January 5, 2021, entitled "Torque Support for Supporting Driving Torque and Roller Device Having Torque Support". The related application of its parent application is incorporated herein by reference. Technical Field

[0002] The present invention relates to a torque support for supporting the driving torque of at least one shaft drive, comprising two first force transmission elements, each rotatably and spaced apart from the shaft drive at a first end; and a support element spaced apart from the shaft drive, wherein the first force transmission elements are rotatably and spaced apart from each other at second ends opposite to the first ends; and two second force transmission elements, each rotatably and spaced apart from the support element at a first end, and rotatably and spaced apart from each other at second ends opposite to the first ends, respectively, on a fixed element independent of the shaft drive. Background Technology

[0003] In existing calender or rolling mill drives, the driving torque is supported by a simple torque support in which the drive is directly connected to the roll, and the torque is often supported by a connection to the frame, an external frame, or by the mutual support of two rigid, single-piece torque supports. For example, a torque support is known from utility model DE 87 12 742 U1.

[0004] This torque support, which supports the torque on one side, introduces force into the support section. When torque occurs, it is supported by the torque support, which acts as a lever arm with a force acting in the opposite direction at its end. This force then reacts on the drive, causing the roll to be extruded from its position and affecting the accuracy of the equipment to varying degrees depending on the supported drive torque. Because the reaction force has a component in the same direction of action as in an actual rolling mill, it directly affects the rolling force or roll gap.

[0005] Another problem, for example, exists in interconnected torque supports because the angular position of the rollers relative to each other changes when the rollers move linearly in the horizontal direction, that is, when the roller gap changes. Furthermore, when the torque supports are externally connected, the roller support portion can only move freely to a limited extent when the support point of the torque support is fixed externally.

[0006] If the torque is supported by two external points located on opposite sides of the drive, no reaction force is generated acting on the support or the drive. However, the problem with this embodiment of the torque support is that the drive is fixed in its position not only rotationally but also linearly by using two connection points, and therefore cannot fully balance the motion acting on it or move relative to the other roller. Summary of the Invention

[0007] Therefore, the object of the present invention is to improve the torque support member so that, on the one hand, the reaction force is not transmitted to the drive system, and on the other hand, the torque support member has less influence on the placement position of the roller support.

[0008] This objective is achieved by torque support components or by roller devices.

[0009] Therefore, a torque support for supporting the driving torque of at least one shaft drive is proposed, comprising two first force transmission elements, each rotatably and spaced apart from the shaft drive at a first end; a support element spaced apart from the shaft drive, each of the first force transmission elements rotatably and spaced apart from the first end at a second end opposite to the first end; and two second force transmission elements, each rotatably and spaced apart from the support element at a first end, and rotatably and spaced apart from the first end at a second end opposite to the first end, on a fixed element independent of the shaft drive. Here, in the torque support, one of the two first force transmission elements is a pressure element, and the other is a tension element. The first ends of the first force transmission elements can be arranged opposite each other around a first drive axis. The support element can be constructed as a surface element extending substantially in the same fastening plane as the fixing point of the force transmission element. The second end of the first force transmitting element and the first end of the second force transmitting element can be arranged opposite each other on the support element. The fixing points of the force transmitting elements can be arranged on the support element such that these fixing points define the corners of a square. Thus, these corners in the square can be alternately defined by the first and second force transmitting elements. The independent fixing element can be, in particular, a frame, a fastening point independent of the calender, or another drive. The support element can be, in particular, centrally arranged below the drive and oriented in the plane of its end face or parallel to the end face of the drive.

[0010] The advantage of the torque support according to the invention is that the torque is further guided to the force transmission element via two rotatable bearings, which are respectively fixed to one or more actuators via these two rotatable bearings. Depending on the direction of the torque, one of these force transmission elements is a tension element, and the other is a compression element. The torque can only be transmitted in the form of tension and compression, limited by system conditions, via the rotatable bearings. With this structure, the torque support can only transmit torque. No other forces are introduced into the system. Therefore, fluctuations in the driving torque do not lead to inaccuracies in the equipment.

[0011] The second end of the second force transmission element can be rotatably and spaced apart from each other on a second shaft drive arranged parallel to the first shaft drive. Here, the second end of the second force transmission element can be arranged opposite each other around the second drive axis. This results in a mirror-symmetrical arrangement of the two drives and the first and second force transmission elements, in which the axis of symmetry extends perpendicularly through the support element. The roller distance can also be changed using the torque support according to the invention, since the support element can move freely. By changing the roller distance, the support element will only move up and down. The angular positions of the two rollers also remain consistent when adjusting the roller positions.

[0012] The force transmission elements can also be rotatably supported about their respective fixed points. Thus, only tension and pressure are guided via the force transmission elements to externally arranged support elements, which are supported or connected only by rotatable bearings at the ends of the force transmission elements. The fact that the force transmission elements are rotatably supported about their respective fixed points means that the force transmission elements are rotatable in a plane perpendicular to the axial direction of the assigned actuator. The force transmission elements can be fixed to the respective actuators, in particular, by rotatable bolt connections. Alternatively, a support can be arranged between the respective actuator and the force transmission element. Furthermore, alternatively, the force transmission element can be fixed to the respective actuator by a hinged connection.

[0013] It can be specified that the first end of the first force transmission element is rotatably fixed relative to and around the flange of the drive shaft of the first shaft driver. Alternatively, a fastening disc can be mounted on the flange of the first driver as an intermediate element, on which the force transmission element is fixed.

[0014] Alternatively, the second end of the second force transmission element may be rotatably fixed to a flange surrounding the drive shaft of the second shaft driver. Alternatively, a fastening disc may be mounted on the flange of the second driver as an intermediate element, on which the force transmission element is further fixed.

[0015] These force transmission elements can be fastened to the driver such that a first line intersecting the first end of the first force transmission element and a second line intersecting the second end of the second force transmission element intersect at an angle of 60° to 120°, preferably 80° to 100°, and particularly preferably 90°.

[0016] Furthermore, spacers can be additionally mounted on the flanges of the first or second driver, with corresponding ends of the force-transmitting elements fixed to the spacers, such that the force-transmitting elements fixed to the spacers and the force-transmitting elements fixed to the other driver extend in different planes perpendicular to the axial direction of the drive shaft. Alternatively, in the case of a fastening disc disposed on the flange, the spacer is mounted between the corresponding fastening disc and the corresponding flange. The fastening disc can be mounted on the corresponding flange by means of bolts. The spacer can be directly screwed onto the flange by bolts or has holes aligned with the fastening disc, through which the spacer and the assigned fastening disc are jointly screwed onto the flange by bolts.

[0017] Furthermore, the front force transmission element can be fixed to the support element on the front side, and the rear force transmission element can be fixed to the support element on the rear side. Thus, the actuator can move freely relative to each other without hindering one of the mentioned movements, or the support element can move up and down.

[0018] The ends of the force transmission element fixed to the support element can also be fixed to the support element in a circular pattern or at the corners of a square.

[0019] Furthermore, it can be specified that the first force transmitting element and the second force transmitting element are arranged parallel to each other. Consequently, the distance between the fixed points of the first ends of the force transmitting elements and the distance between the fixed points of the second force transmitting elements are the same.

[0020] Furthermore, one of the first force-transmitting elements and one of the second force-transmitting elements may intersect between the fixing point on the drive and the fixing point on the support element. Specifically, the first and second force-transmitting elements fixed to the side of the support element facing the drive between the corresponding fixing point on the drive and the corresponding fixing point on the support element may intersect. Correspondingly, it can be specified that the other corresponding first and second force-transmitting elements do not intersect.

[0021] Furthermore, the second end of the first force transmission element and the first end of the second force transmission element can be fixed to the support element respectively relative to each other and at regular intervals.

[0022] Furthermore, by increasing the distance between the two parallel drive axes of the two drivers, the support element can be moved in the direction of the drive axes.

[0023] Furthermore, the force transmitting elements can be constructed in a rod shape. These force transmitting elements can, in particular, be constructed as flat rods. Here, all force transmitting elements can have the same length. Holes can be provided at the first and second ends of the first and second force transmitting elements, through which the force transmitting elements can be fastened to corresponding fixing points. Here, the hole spacing can be the same at all force transmitting elements. The ends of the force transmitting elements can be rounded.

[0024] The support element can also be constructed in a ring shape. The periphery of the end of the force-conducting element fixed thereon can correspond, in particular, to the periphery on the flange of the first and / or second actuator, with the opposite end of the force-conducting element respectively fixed to the periphery on the flange. The support element can, in particular, have a flat, circumferential ring, with holes for fixing the force-conducting element arranged at regular intervals on the ring. Alternatively, the support element can have a circular or polygonal disc shape, provided that the aforementioned fixing of the force-conducting element is ensured.

[0025] The present invention also proposes a roller device having at least two parallel rollers, particularly those operating in opposite directions, forming a roller gap between them, wherein the rollers are driven by side-by-side shaft drives operating in opposite directions, and the roller device having at least one torque support as described above. Attached Figure Description

[0026] Exemplary embodiments of the present invention are illustrated with reference to the following figures. As shown herein:

[0027] Figure 1 shows a perspective view of an embodiment of mutually supporting torque support members as known in the prior art;

[0028] Figure 2 shows a front view of an embodiment of the torque support member according to Figure 1, which is known from the prior art;

[0029] Figure 3 shows a front view of an embodiment of a torque support member with support portions on both sides, as known in the prior art;

[0030] Figure 4 A front view of a first embodiment of the torque support member according to the present invention is shown;

[0031] Figure 5 A front view of another embodiment of the torque support member according to the present invention is shown;

[0032] Figure 6 A perspective view of another embodiment of the torque support member according to the present invention is shown;

[0033] Figure 7 It shows that according to Figure 6A front view of an embodiment of the torque support member according to the present invention;

[0034] Figure 8 A perspective view of another embodiment of the torque support member according to the present invention is shown;

[0035] Figure 9 It shows that according to Figure 8 A front view of an embodiment of the torque support member according to the present invention. Detailed Implementation

[0036] Figure 1 illustrates a solution known in the prior art for supporting torque, in which the driving torque occurring on the rolling mill drive or mill drive 5, 6 is supported by mutually supporting torque supports, which are rigidly fastened to the flanges 19 of the drive 5, 6 respectively, and rotatably anchored to each other at a common fixed point. The drive 5, 6 are directly connected to the respective rolls 7, 8. The drive shafts 21, 22 are oriented parallel to each other, thereby creating an equidistant roll gap 23 between the rolls 7, 8.

[0037] As can be seen from Figure 2, this unilateral support of force always introduces force into the corresponding support. Figure 2 only illustrates the right-hand drive side 5. Once torque 2 is generated on the drive side, this torque 2 is supported by the torque support 1 of the right-hand drive 5 via force 3 and lever arm 26. However, this generates a reaction force 4 acting on the drive 5. This force 4 causes the roll 7 to be extruded from its position and has varying degrees of effect on the accuracy of the equipment depending on the magnitude of the drive torque. Because the reaction force 4 has a component in the same direction of action as the feed direction of the calender, this reaction force directly affects the rolling force or roll gap 23.

[0038] The embodiment of torque support 1 shown in Figure 3, relative to the examples in Figures 1 and 2, has anchoring portions on both sides, in which the torque support 1 has two opposing lever arms 26 of equal length. By having the torque support 1 supported on both sides, the force 3 of the supporting torque and the reaction force 4 cancel each other out, and thus no force acts on the support and no effect occurs on the roller gap 23. However, in this case, the drive 5 is disadvantageously fixed in its position at two points and therefore cannot fully compensate for the movement.

[0039] Figure 4The first embodiment of the torque support 1 according to the invention shown illustrates a shaft drive 5 with a first roller 7, wherein torque support is achieved by a support element 17, which is connected to the flange 19 of the drive via two first force transmission elements 9 on one hand, and to two fixed bearings 27 via two second force transmission elements 10 on the other hand. The fixed bearings 27 can be external, i.e., decoupled from the shaft drive 5, such as a machine frame or other structure suitable as a fixed bearing. The first force transmission elements 9 are rotatably fastened at a first end 11 to a fixing point 18 on the flange 19 of the first shaft drive 5, wherein rotatable here means, in particular, rotatable in a plane perpendicular to the shaft drive axis 21. The first force transmission elements are also rotatably fastened at a second end 12 to the fixing point 18 on the support element 17. Here, the force transmission elements 9 extend parallel to each other. This means that the fixing point 18 on the flange 19 and the fixing point 18 on the support element 17 are equidistant from each other. The force transmission elements are constructed as flat rods, which are preferably made of metal. The support element 17 is annularly constructed of a flat piece, which in particular has the same width as the force-transmitting element. The average ring diameter corresponds, in particular, to the distance from the fixing point 18. The first force-transmitting element 9 is arranged opposite to the support element 17. The second force-transmitting element 10 is preferably offset by 90° relative to the first force-transmitting element 9 and rotatably fastened to the fixing point 18 on the support element 17 at its first end 13. Thus, the second force-transmitting element 10 is also arranged opposite to the support element 17. The second force-transmitting element 10 is rotatably fastened to the fixing point 18 at its second end 14, and these fixing points are in particular constructed as fixed bearings 27. The distance between the fixing points 18 of the second force-transmitting elements 10 is also the same, so that the second force-transmitting elements 10 also extend parallel to each other. With this arrangement, these force-transmitting elements transmit only compressive or tensile stress, respectively, and not torque. Thus, compared with conventional torque supports, the drive's deviation from its rated position due to large torque is significantly reduced.

[0040] Figure 5Another embodiment of the torque support 1 is shown, wherein two shaft drives 5, 6 or two rollers 7, 8 driven by shaft drives 5, 6 are arranged parallel to each other and form a common roll gap 23 between them. Thus, the driving directions of the drives 5, 6 are always opposite to each other. Here, each of the drives 5, 6 has a separate torque support 1, that is, each drive 5, 6 has a separate first force transmission element 9 and a second force transmission element 10 and a separate support element 17. The second force transmission element 10 is rotatably fixed at its second end 14 to a separate fixed bearing 27. The torque support 1 prevents the drives 5, 6 from deviating from their rated position even under high torque, such as under varying loads, so that the distance d between the shaft drive axes and the corresponding feed in the roll gap 23 remain constant.

[0041] exist Figure 6 and Figure 7 In another embodiment of the torque support 1 shown, two drives 5 and 6 operating in opposite directions share a common torque support 1, such that the two drives 5 and 6 support each other relative to each other. Here, the torque 2 is now derived via two force transmission elements 9 and 10 respectively fixed in parallel to the drives 5 and 6, these force transmission elements being fixed to annular support element 17 at their opposite ends 12 and 13. Here, the force transmission elements 9 and 10, implemented as flat rods, are rotatably supported in their fixing points 18. Thus, the force transmission elements 9 and 10 are used only to transmit tension or pressure to the support element 17, and not to transmit torque to the support element 17. Finally, this results in no reaction force acting on the drives 5 and 6, so that even under high torque, there is no effect on the roll gap 23.

[0042] For this purpose, the two radially opposing first ends 11 of the first force transmitting element 9 on the flange 19 of the first driver 5 are rotatably fixed to the fixing points 18 orthogonal to the first drive axis 21. The first force transmitting element 9 is constructed as a flat rod and has the same length, and is rotatably fixed to the support element 17 at corresponding fixing points 18 on the periphery of the annular support element 17 at opposing second ends 12. Here, the first force transmitting element 9 is rotatable parallel to a plane (in which the support element 17 extends). The fixing points 18 on the flange 19 of the first force transmitting element 9 and the fixing points 18 on the support element 17 are equidistant, such that the two first force transmitting elements 9 extend parallel to each other.

[0043] The two radially opposing second ends 14 of the second force transmission element 10 on the flange 19 of the second driver 6 are rotatably fixed to the fixing points 18 orthogonally to the second drive axis 22. The second force transmission element 10 is also constructed as a flat rod and has the same length as the first force transmission element 9, and is rotatably fixed to the support element 17 at corresponding fixing points 18 on the periphery of the annular support element 17 at opposing first ends 13. Here, the second force transmission element 10 is rotatable parallel to a plane (in which the support element 17 extends). The fixing points 18 on the flange 19 of the second force transmission element 10 and the fixing points 18 on the support element 17 are also equidistant, such that the two second force transmission elements 10 also extend parallel to each other. The straight line connecting the fixing point 18 of the first force transmission element 9 on the flange 19 of the first driver 5 and the straight line connecting the fixing point 18 of the second force transmission element 10 on the flange 19 of the second driver 6 intersect at an angle α above the roller assembly. By adjusting this angle, the vertical distance between the support element 17 and the parallel drive axes 21 and 22 of the roller assembly can be adjusted. The annular support element 17 is composed of a flat ring, on which the fixing points 18 of the first force transmitting element 9 and the second force transmitting element 10 are alternately arranged, wherein the first force transmitting element 9 is fixed to the support element 17 on the front side and the second force transmitting element 10 is fixed to the support element 17 on the rear side, so that the force transmitting elements 9 and 10 do not obstruct each other. For example, the upper first force transmitting element 9 and the upper second force transmitting element 10 intersect at the distance between the corresponding fixing points 18 on the corresponding flange 19 and the corresponding fixing points 18 on the support element 17, wherein the first force transmitting element 9 moves in front of the second force transmitting element 10 and the two do not affect each other in their respective movement spaces. Accompanyingly, a spacer 20 in the form of a flat disc is provided on the flange 19 of the first driver 5, which is installed below the fastening element on which the first force transmitting element 9 is fixed to the first driver 5. Here, the spacer 20 has approximately the sum of the thicknesses of the second force-conducting element 10 and the support element 17 in order to compensate for the resulting thickness difference.

[0044] Changes in the distance d between drive shafts 21 and 22 or in the roller gap 23 are also possible because the support element 17 moves up and down via the rotatable support of the force transmission elements 9 and 10. Here, the angular position of the two rollers 7 and 8 can be maintained even when adjusting the roller distance.

[0045] Figure 8 and Figure 9Another embodiment of the invention is shown, in which four rollers 7, 8, 30, 31 are arranged parallel to each other with three roller gaps 23, 32, 33 configured. Here, adjacent rollers operate in opposite directions. In particular, the arrangement shown includes three torque supports 1, each having three support elements 17 located below two rollers. In this embodiment, two adjacent torque supports 1 are assigned to each of the two built-in shaft drives 6, 28. Thus, four force transmission elements 9, 10 are rotatably fastened to the flanges 19 of the drives 6, 28, respectively, wherein two first force transmission elements 9 are fixed to the support element 17 located on the lower left, and two second force transmission elements 10 are fixed to the support element 17 located on the lower right. In the illustrated embodiment, the first force transmission elements 9 extend in the plane on the front side of the support element 17, and the second force transmission elements 10 extend in the plane on the rear side of the support element 17. Corresponding spacers 20 are installed on drives 5, 6, 28, and 29, providing different fastening planes for the first force transmitting element 9 and the second force transmitting element 10. It should be understood that the principles of the illustrated embodiment can be alternatively applied to any plurality of adjacently arranged shaft drives.

[0046] The features of the invention disclosed in the foregoing description and drawings are important for realizing the invention not only individually but also in any combination.

[0047] List of reference numerals

[0048] 1 Torque Support

[0049] 2 Torque

[0050] 3 Supporting force

[0051] 4. Reaction forces of the actuator

[0052] 5 First Axis Driver

[0053] 6 Second axis driver

[0054] 7 First Roller

[0055] 8 Second Roller

[0056] 9 First force transmission element

[0057] 10 Second force transmission element

[0058] 11 First end of the first force transmission element

[0059] 12 The second end of the first force transmission element

[0060] 13 The first end of the second force transmission element

[0061] 14 The second end of the second force transmission element

[0062] 15 First drive shaft

[0063] 16 Second Drive Shaft

[0064] 17 Support elements

[0065] 18 fixed points

[0066] 19 flanges

[0067] 20 spacers

[0068] 21 First drive axis

[0069] 22 Second drive shaft

[0070] 23 roll gap

[0071] 24 tension

[0072] 25 pressure

[0073] 26 lever arms

[0074] 27 Fixed Bearing

[0075] 28 Third Axis Driver

[0076] 29 Fourth Axis Driver

[0077] 30 Third Roller

[0078] 31 Fourth Roller

[0079] 32 Second Roll Gap

[0080] 33 Third Roller Gap

[0081] Distance between d drives

[0082] α Angle between fixed points and axes

Claims

1. A roller device, comprising: frame; A set of four or more horizontally aligned rollers within a frame are rotated by corresponding drivers, with the first and third rollers rotating in a first direction via corresponding first and third drivers, and the second and fourth rollers rotating in a relative second direction via corresponding second and fourth drivers; A torque support system includes torque support elements associated with each horizontally aligned roller, each torque support element comprising: Support elements; A first force transmission element connected to a driver and a support element in the driver; A second force transmission element connected to the driver and support element is parallel to the first force transmission element; A third force transmission element connected to the support elements and the frame; The fourth force transmission element, which is connected to the support element and the frame, is parallel to the third force transmission element.

2. The roller device according to claim 1, wherein the support element is polygonal.

3. The roller device according to claim 1, wherein the first, second, third and fourth force transmission elements are rod-shaped.

4. The roller device according to claim 1, wherein the first, second, third and fourth force transmission elements are flat rod-shaped elements.

5. The roller assembly according to claim 1, wherein the roller assembly is a calender or a rolling mill.

6. The roller assembly of claim 1, wherein the torque support is associated with the first roller; The additional torque support is associated with each of three or more other horizontally aligned rollers.

7. The roller assembly of claim 1, wherein the first and second force transmission elements of the first torque support are parallel to the first and second force transmission elements of the other torque support; and The third and fourth force transmission elements of the first torque support are parallel to the third and fourth force transmission elements of the other torque support.

8. The roller assembly of claim 1, wherein four or more horizontally aligned rollers are configured to move horizontally relative to each other to change the roll gap between adjacent rollers.

9. The roller device according to claim 1, wherein the first force transmission element is connected to the support element, opposite to the connection of the second force transmission element to the support element.

10. The roller device according to claim 1, wherein the third force transmission element is connected to the support element, opposite to the connection of the fourth force transmission element to the support element.

11. The roller device of claim 1, wherein a first force transmission element is connected to a drive and a support element via a bearing, a second force transmission element is connected to a drive and a support element via a bearing, a third force transmission element is connected to a support element and a frame via a bearing, and a fourth force transmission element is connected to a support element and a frame via a bearing.

12. The roller device according to claim 1, wherein the connection between the first, second, third and fourth force transmission elements and the support element is rotatable.

13. The roller device according to claim 1, wherein the angle between the connection to the adjacent force transmission element of the support element is 90 degrees.

14. The roller device according to claim 1, wherein the first, second, third and fourth force transmission elements have the same length.

15. The roller device of claim 1, wherein the first and second force transmission elements are connected to one of the drives via flanges.

16. The roller device of claim 1, wherein a group of four or more horizontally aligned rollers comprises more than four rollers.

17. The roller device of claim 1, wherein the third and fourth force transmission elements are connected to the frame via one or more intermediate structures.

18. A torque support system, comprising: A torque support associated with one of a set of four or more horizontally aligned rollers rotated by a corresponding drive, each torque support comprising: Support elements; A first force transmission element connected to a driver and a support element in the driver; A second force transmission element connected to the driver and support element is parallel to the first force transmission element; A third force transmission element connected to the support elements and the base support structure; The fourth force transmission element, which is connected to the support element and the base support structure, is parallel to the third force transmission element.

19. The torque support system according to claim 18, wherein the support element is polygonal.

20. The torque support system according to claim 18, wherein the first, second, third and fourth force transmission elements are rod-shaped.

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