Roller lower elevation adjusting structure

Abstract

The utility model provides a roller lower elevation adjusting structure which comprises a roller changing trolley, a pressure head assembly is arranged on the roller changing trolley, the pressure head assembly comprises an upper pressure equalizing pad and a pressure sensor, and the pressure sensor is installed between the upper pressure equalizing pad and the roller changing trolley; the transition base plate is fixedly connected with the bearing seat of the lower roll system; the adjusting base plate is located between the transition base plate and the upper pressure equalizing pad; the arc-shaped base plate is located between the adjusting base plate and the upper pressure equalizing pad, and the end face, close to the upper pressure equalizing pad, of the arc-shaped base plate is an arc-shaped face. Compared with a traditional structure for adjusting the elevation of a lower roll system on a roll changing trolley, by replacing the adjusting base plate on the lower roll system, operation is more convenient, labor intensity of workers is reduced, roll changing downtime is greatly shortened, production efficiency of a rolling line is improved, the pressure head assembly can detect rolling force data in real time, and production efficiency is improved. The function range of the lower elevation adjusting device is expanded, and the automation level of a rolling line is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rolling mill technical field, especially a kind of roll lower elevation adjustment structure. BACKGROUND

[0002] Hot strip rolling mill is the main equipment on hot strip production line, for directly rolling strip, its performance is directly related to the efficiency of production line and product quality, lower elevation adjustment device is an important component of hot strip rolling mill, for the adjustment of roll face elevation when the roll diameter of lower roll system changes.

[0003] Lower elevation adjustment device in prior art, lower roll system is directly placed on roll changing trolley, when the roll diameter of roll changing trolley changes, it needs to change adjusting pad plate on roll changing trolley at roll changing downtime, which will greatly prolong roll changing downtime, affect production efficiency of production line, and the operation is dangerous when changing adjusting pad plate on production line, and the labor intensity of worker is large;Roll changing trolley is of integral structure, and it is difficult to process and manufacture, and it is easy to deform in use;There is no rolling force detection device on roll changing trolley, and rolling force data cannot be fed back in production process. SUMMARY

[0004] Therefore, the utility model aims at providing a kind of roll lower elevation adjustment structure to solve at least one of the above-mentioned technical problems.

[0005] To achieve the above-mentioned purposes, the technical scheme of the utility model is as follows:

[0006] A kind of roll lower elevation adjustment structure, comprising:

[0007] Roll changing trolley, pressure head assembly is equipped on the roll changing trolley, the pressure head assembly includes upper pressure equalizing pad, pressure sensor, the pressure sensor is installed between upper pressure equalizing pad and roll changing trolley;

[0008] Transition pad, the transition pad is fixedly connected with the bearing seat of lower roll system;

[0009] Adjusting pad plate, the adjusting pad plate is located between transition pad and upper pressure equalizing pad;

[0010] Arc-shaped pad, the arc-shaped pad is located between adjusting pad plate and upper pressure equalizing pad, the end face of arc-shaped pad adjacent to upper pressure equalizing pad is arc surface.

[0011] Further, the model of the adjusting pad plate has multiple, and the thickness of adjusting pad plate of different models is different, suitable for adjusting different roll lower elevation;

[0012] The number of the roll changing trolley is two, and the two roll changing trolleys correspond to the bearing seats of the operation side and the transmission side respectively.

[0013] Further, the pressure head assembly further comprises a pressure head frame and a lower uniform pressure pad, the pressure head frame is fixedly connected with the roll changing trolley, the lower uniform pressure pad, the upper uniform pressure pad and the pressure sensor are all installed on the inner side of the pressure head frame, the pressure sensor is located between the lower uniform pressure pad and the upper uniform pressure pad, and the upper uniform pressure pad is connected with the pressure head frame through a pre-tightening bolt.

[0014] Further, a pre-tightening threaded hole is formed on the pressure head frame, a through hole corresponding to the pre-tightening threaded hole is formed on the upper uniform pressure pad, a groove corresponding to the through hole is formed on the upper end surface of the upper uniform pressure pad, the pre-tightening bolt is threadedly connected with the pressure head frame through the through hole, and the head of the pre-tightening bolt is located on the inner side of the groove.

[0015] Further, a disc spring is arranged between the head of the pre-tightening bolt and the bottom end of the groove, a positioning sleeve is arranged on the outer side of the pre-tightening bolt, the inner diameter of the positioning sleeve matches the outer diameter of the pre-tightening bolt, the outer diameter of the positioning sleeve matches the inner diameter of the disc spring, and the disc spring is installed on the outer side of the positioning sleeve.

[0016] A grommet is fixedly arranged on the outer side of the upper end of the positioning sleeve, and the grommet is located between the head of the pre-tightening bolt and the disc spring.

[0017] Further, an installation groove is formed on the lower end of the bearing seat, a first threaded hole is formed at the bottom end of the installation groove, a first connecting hole corresponding to the first threaded hole is formed on the transition pad, a first bolt is arranged in the first connecting hole, and the first bolt is threadedly connected with the inner side of the first threaded hole through the first connecting hole.

[0018] A second threaded hole is formed on the transition pad, a mounting hole corresponding to the second threaded hole is formed on the adjusting pad, the diameter of the mounting hole is larger than that of the second threaded hole, a second connecting hole corresponding to the second threaded hole is formed on the arc-shaped pad, a second bolt is arranged in the second connecting hole, and the second bolt is threadedly connected with the inner side of the second threaded hole through the second connecting hole.

[0019] Further, a receiving groove corresponding to the second threaded hole is formed at the bottom end of the installation groove, and the part of the second bolt protruding from the upper end surface of the transition pad is located on the inner side of the receiving groove.

[0020] Further, a protective cover is fixedly arranged on the lower end of the bearing seat, and the pressure head assembly is located on the inner side of the protective cover.

[0021] The protective cover is a cylindrical structure surrounded by a plurality of side plates.

[0022] Further, a gap exists between the outside of the pressure head assembly and the inside of the protective cover.

[0023] Further, the bearing seat is fixed with a protective plate corresponding to the protective cover, the upper end of the protective plate is fixedly connected with the bearing seat, and the lower end of the protective plate is inclined away from the bearing seat.

[0024] Compared with the prior art, the roll lower elevation adjustment structure has the following beneficial effects:

[0025] Compared with the conventional structure for adjusting the lower roll system elevation on the roll changing trolley, the roll lower elevation adjustment structure can replace the adjusting pad plate on the lower roll system, is more convenient to operate, reduces the labor intensity of workers, greatly shortens the roll changing downtime, improves the rolling line production efficiency, and can detect the rolling force data in real time, expands the function range of the lower elevation adjustment device, and improves the rolling line automation level. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the application. The embodiments of the application and its

[0027] Figure 1 The roll lower elevation adjustment structure is shown in the front view structure schematic view.

[0028] Figure 2 The roll lower elevation adjustment structure is shown in the front view structure schematic view. Figure 1 The A-A section structure schematic view.

[0029] Figure 3 The roll lower elevation adjustment structure is shown in the front view structure schematic view.

[0030] Figure 4 The roll lower elevation adjustment structure is shown in the front view structure schematic view. Figure 1 The B structure schematic view.

[0031] Figure 5 The roll lower elevation adjustment structure is shown in the front view structure schematic view. Figure 4 The C structure schematic view.

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 1, roll changing trolley; 2, pressure head assembly; 3, lower roller system; 4, arc-shaped backing plate; 5, transition backing plate; 6, adjusting backing plate; 7, side baffle; 8, protective plate; 9, first bolt; 10, second bolt; 11, operation side vehicle body; 12, transmission side vehicle body; 13, pull rod; 21, pressure head frame; 22, pressure sensor; 23, lower pressure equalizing pad; 24, upper pressure equalizing pad; 25, positioning sleeve; 26, disc spring; 27, pre-tightening bolt; 31, mounting groove; 32, storage groove; 33, roll; 51, second threaded hole. DETAILED DESCRIPTION

[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0036] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] As shown in the drawings, Figures 1 to 5 A roll 33 lower elevation adjustment structure, comprising:

[0039] The roll changing trolley 1 is provided with a pressure head assembly 2, the pressure head assembly 2 comprises an upper uniform pressure pad 24 and a pressure sensor 22, the pressure sensor 22 is installed between the upper uniform pressure pad 24 and the roll changing trolley 1;

[0040] A transition pad plate 5 is fixedly connected with the bearing seat of the lower roller system 3;

[0041] An adjusting pad plate 6 is located between the transition pad plate 5 and the upper uniform pressure pad 24;

[0042] An arc-shaped pad plate 4 is located between the adjusting pad plate 6 and the upper uniform pressure pad 24, and the end face of the arc-shaped pad plate 4 adjacent to the upper uniform pressure pad 24 is an arc-shaped surface.

[0043] The adjusting pad plate 6 has multiple types, and the thicknesses of the adjusting pad plates 6 of different types are different, and the adjusting pad plates 6 are suitable for adjusting different lower elevations of the rolls 33.

[0044] The number of the roll changing trolleys 1 is two, and the two roll changing trolleys 1 correspond to the bearing seats of the operating side and the transmission side respectively, the operating side trolley body 11 and the transmission side trolley body 12 of the two roll changing trolleys 1 are connected through a pull rod 13, the two ends of the pull rod 13 are hingedly connected with the two roll changing trolleys 1 through hinge shafts, and the axis of the hinge shafts is perpendicular to the axis of the roll 33.

[0045] The pressure head assembly 2 further comprises a pressure head frame 21 and a lower uniform pressure pad 23, the pressure head frame 21 is fixedly connected with the roll changing trolley 1, the lower uniform pressure pad 23, the upper uniform pressure pad 24 and the pressure sensor 22 are all installed on the inner side of the pressure head frame 21, the pressure sensor 22 is located between the lower uniform pressure pad 23 and the upper uniform pressure pad 24, and the upper uniform pressure pad 24 is connected with the pressure head frame 21 through a pre-tightening bolt 27.

[0046] The pre-tightening threaded hole is opened on the pressure head frame 21, the through hole corresponding to the pre-tightening threaded hole is opened on the upper uniform pressure pad 24, the recess corresponding to the through hole is opened on the upper end surface of the upper uniform pressure pad 24, the pre-tightening bolt 27 is threaded connected with the pressure head frame 21 through the through hole, and the head of the pre-tightening bolt 27 is located on the inner side of the recess. The disc spring 26 is arranged between the head of the pre-tightening bolt 27 and the bottom end of the recess, the positioning sleeve 25 is arranged on the outer side of the pre-tightening bolt 27, the inner diameter of the positioning sleeve 25 matches the outer diameter of the pre-tightening bolt 27, the outer diameter of the positioning sleeve 25 matches the inner diameter of the disc spring 26, and the disc spring 26 is arranged on the outer side of the positioning sleeve 25. The grommet is fixedly arranged on the outer side of the upper end of the positioning sleeve 25, and the grommet is located between the head of the pre-tightening bolt 27 and the disc spring 26. When the pre-tightening bolt 27 is screwed, the disc spring 26 is compressed, the elastic force generated by the disc spring 26 is applied to the upper uniform pressure pad 24, the upper uniform pressure pad 24 is sequentially compressed against the pressure sensor 22, the position of the pressure sensor 22 is kept stable during the working process, and the gap between the combined surfaces is prevented from entering impurities, so that the flatness of the upper and lower surfaces of the pressure sensor 22 is affected, and the detection accuracy is affected. The positioning sleeve 25 is used to ensure that the compression amount of each disc spring 26 is consistent, so that the pre-compression force of the pressure sensor 22 is balanced.

[0047] The mounting groove 31 is opened on the lower end of the bearing seat, the first threaded hole is opened on the bottom end of the mounting groove 31, the first connecting hole corresponding to the first threaded hole is opened on the transition pad plate 5, the first bolt 9 is arranged in the first connecting hole, and the first bolt 9 is threaded connected with the inner side of the first threaded hole through the first connecting hole. The second threaded hole 51 is opened on the transition pad plate 5, the mounting hole corresponding to the second threaded hole 51 is opened on the adjusting pad plate 6, the diameter of the mounting hole is greater than that of the second threaded hole 51, the second connecting hole corresponding to the second threaded hole 51 is opened on the arc-shaped pad plate 4, the second bolt 10 is arranged in the second connecting hole, and the second bolt 10 is threaded connected with the inner side of the second threaded hole 51 through the second connecting hole. The bottom end of the mounting groove 31 is provided with the receiving groove 32 corresponding to the second threaded hole 51, and the part of the second bolt 10 protruding from the upper end surface of the transition pad plate 5 is located on the inner side of the receiving groove 32. After the second bolt 10 is loosened, the model of the adjusting pad plate 6 can be replaced, and a plurality of adjusting pad plates 6 can be used together, so that the application range is expanded.

[0048] The protective cover is fixedly arranged on the lower end of the bearing seat, and the pressure head assembly 2 is located on the inner side of the protective cover. The protective cover is a cylindrical structure surrounded by a plurality of side plates 7. There is a gap between the outer side of the pressure head assembly 2 and the inner side of the protective cover. The protective cover can ensure that the lower roller system 3 is smoothly placed on the roller changing trolley 1, prevent the lower roller system 3 from moving relatively with the roller changing trolley 1 by a large amplitude, and improve the stability during use.

[0049] The bearing seat is fixed with a protection plate 8 corresponding to the protection cover, the upper end of the protection plate 8 is fixedly connected with the bearing seat, and the lower end of the protection plate 8 is inclined away from the bearing seat. The protection plate 8 prevents rolling steel cooling water and other impurities from entering the inside of the pressure head assembly 2, ensures the measurement accuracy of the pressure sensor 22 and prolongs the service life.

[0050] Working process:

[0051] When the scheme is implemented, the arc-shaped backing plate 4 directly contacts with the pressure head assembly 2 of the roll changing trolley 1 and is used for supporting the lower roller system 3. When the diameter of the roll 33 changes after being used for a period of time, it is necessary to change the adjusting backing plate 6 with different thicknesses, so as to compensate the roll face height change caused by the roll diameter change of the roll 33, so that the roll face elevation is within a reasonable range. This part of adjustment work is carried out offline and does not occupy the production line roll changing downtime.

[0052] The roll 33 lower elevation adjustment method of the utility model will be described below by taking an example:

[0053] The initial diameter Dmax of the roll 33 is φ1000mm, the minimum allowable diameter Dmin is φ900mm, the nominal elevation of the roll face is +800mm, and the roll face elevation tolerance is ±5mm. Three adjusting backing plates 6 are arranged at each arc-shaped backing plate, the thickness of the first adjusting backing plate 6 is 10mm, the thickness of the second adjusting backing plate 6 is 20mm, and the thickness of the third adjusting backing plate 6 is 30mm.

[0054] When the diameter D of the roll 33 is the initial diameter φ1000mm, the roll face elevation is the nominal elevation +800mm, and at this time, the adjusting backing plate 6 is not needed. When the roll diameter changes after the roll 33 is reground, the thickness of the adjusting backing plate 6 is determined according to the actual diameter D of the roll 33.

[0055] When 1000mm≧D≧990mm, the thickness of the adjusting backing plate 6 is 0mm, that is, the adjusting backing plate 6 is not needed;

[0056] When 990mm>D≧970mm, the thickness of the adjusting backing plate 6 is 10mm, and the first adjusting backing plate 6 is selected;

[0057] When 970mm>D≧950mm, the thickness of the adjusting backing plate 6 is 20mm, and the second adjusting backing plate 6 is selected;

[0058] When 950mm>D≧930mm, the thickness of the adjusting backing plate 6 is 30mm, and the third adjusting backing plate 6 is selected;

[0059] When 930mm>D≧910mm, the thickness of the adjusting backing plate 6 is 40mm, and the first adjusting backing plate 6 and the third adjusting backing plate 6 are used in combination;

[0060] When 910mm>D≧900mm, the thickness of the adjusting pad plate 6 is 50mm, and the adjusting pad plate 6 two and the adjusting pad plate 6 three are combined for use;

[0061] During rolling, the lower roller system 3 is placed on the roller changing trolley 1, the pressure head assembly 2 installed on the operation side trolley body 11 and the transmission side trolley body 12 of the roller changing trolley 1 supports the arc-shaped pad plate 4 of the lower roller system 3 and prevents the lower roller system 3 from moving, and the pressure sensor 22 in the pressure head assembly 2 detects the rolling force transmitted by the lower roller system 3 in real time and feeds back to the rolling line automation system, so as to optimize the rolling process parameters.

[0062] During roller changing, after the roller 33 is used for a period of time, the roller changing trolley 1 is pushed and pulled by the hydraulic cylinder to pull out the lower roller system 3 from the rolling mill stand, the old roller system is lifted away, the new roller system is changed, and then the roller changing trolley 1 is pushed to load the new lower roller system 3 into the rolling mill stand, and the new roller system is adjusted to the lower roller surface elevation by the adjusting pad plate 6 with appropriate thickness in the preparation workshop according to the diameter of the roller 33.

[0063] Compared with the traditional structure for adjusting the elevation of the lower roller system 3 on the roller changing trolley 1, the operation is more convenient, the labor intensity of workers is reduced, the roller changing downtime is greatly shortened, the rolling line production efficiency is improved, the pressure head assembly 2 can detect the rolling force data in real time, the functional range of the lower elevation adjusting device is expanded, and the rolling line automation level is improved.

[0064] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

[0065] The above is only a preferred embodiment of the present application, and does not limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A roll lower level adjustment structure characterized by, The utility model relates to a roll changing trolley (1) is provided with a pressure head assembly (2), the pressure head assembly (2) includes upper pressure equalizing pad (24), pressure sensor (22), pressure sensor (22) is installed between upper pressure equalizing pad (24) and roll changing trolley (1); Transition pad (5) is fixedly connected with the bearing seat of lower roll system (3); Adjusting pad (6) is located between transition pad (5) and upper pressure equalizing pad (24); Arc pad (4) is located between adjusting pad (6) and upper pressure equalizing pad (24), and the end face of arc pad (4) adjacent to upper pressure equalizing pad (24) is arc surface. The thickness of adjusting pad (6) of different models is different, and adjusting pad (6) is suitable for adjusting different roll (33) lower height; 2. The roll subleveling structure according to claim 1, characterized in that: The number of roll changing trolley (1) is two, and two roll changing trolleys (1) correspond to the bearing seat of operating side and transmission side respectively, two roll changing trolleys (1) are connected through pull rod (13), both ends of pull rod (13) are hinged with two roll changing trolleys (1) through hinge shaft, and the axis of hinge shaft is perpendicular to the axis of roll (33). The pressure head assembly (2) further includes pressure head frame (21), lower pressure equalizing pad (23), the pressure head frame (21) is fixedly connected with roll changing trolley (1), the lower pressure equalizing pad (23), upper pressure equalizing pad (24) and pressure sensor (22) are all installed on the inner side of pressure head frame (21), the pressure sensor (22) is located between lower pressure equalizing pad (23) and upper pressure equalizing pad (24), and upper pressure equalizing pad (24) is connected with pressure head frame (21) through pre-tightening bolt (27).

3. The roll subleveling structure of claim 1 wherein: The pre-tightening threaded hole is formed in the pressure head frame (21), the through hole corresponding to the pre-tightening threaded hole is formed in the upper pressure equalizing pad (24), the recess corresponding to the through hole is formed in the upper end surface of the upper pressure equalizing pad (24), the pre-tightening bolt (27) is screwed into the pressure head frame (21) through the through hole, and the head of the pre-tightening bolt (27) is located on the inner side of the recess.

4. The roll sub-level adjustment structure according to claim 3, characterized in that: The disc spring (26) is arranged between the head of the pre-tightening bolt (27) and the bottom end of the recess, the positioning sleeve (25) is arranged on the outer side of the pre-tightening bolt (27), the inner diameter of the positioning sleeve (25) matches the outer diameter of the pre-tightening bolt (27), the outer diameter of the positioning sleeve (25) matches the inner diameter of the disc spring (26), and the disc spring (26) is installed on the outer side of the positioning sleeve (25).

5. The roll sub-level adjustment structure according to claim 4, characterized in that: The grommet is fixedly arranged on the outer side of the upper end of the positioning sleeve (25), and the grommet is located between the head of the pre-tightening bolt (27) and the disc spring (26). The mounting groove (31) is formed in the lower end of the bearing seat, the first threaded hole is formed in the bottom end of the mounting groove (31), the first connecting hole corresponding to the first threaded hole is formed in the transition pad (5), the first bolt (9) is arranged in the first connecting hole, and the first bolt (9) is screwed into the inner side of the first threaded hole through the first connecting hole.

6. The roll sub-level adjustment structure according to claim 2, characterized in that: ​ The transition pad (5) is provided with a second threaded hole (51), the adjusting pad (6) is provided with a mounting hole corresponding to the second threaded hole (51), the diameter of the mounting hole is larger than that of the second threaded hole (51), the arc-shaped pad (4) is provided with a second connecting hole corresponding to the second threaded hole (51), the second connecting hole is provided with a second bolt (10), and the second bolt (10) is screwed into the inner side of the second threaded hole (51) through the second connecting hole.

7. The roll sub-level adjustment structure according to claim 6, characterized in that: The bottom end of the mounting groove (31) is provided with a receiving groove (32) corresponding to the second threaded hole (51), and the part of the second bolt (10) protruding above the end surface of the transition pad (5) is located in the receiving groove (32).

8. The roll sub-level adjustment structure according to claim 6, characterized in that: The bottom end of the bearing seat is fixedly provided with a protective cover, and the pressure head assembly (2) is located in the protective cover. The protective cover is a cylindrical structure surrounded by a plurality of side baffles (7).

9. The roll sub-level adjustment structure according to claim 8, characterized in that: There is a gap between the outer side of the pressure head assembly (2) and the inner side of the protective cover.

10. The roll sub-leveling structure according to claim 8, characterized in that: The bearing seat is fixedly provided with a protective plate (8) corresponding to the protective cover, the upper end of the protective plate (8) is fixedly connected with the bearing seat, and the lower end of the protective plate (8) is inclined away from the bearing seat.

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