A finishing mill backup roll locking device

Abstract

The utility model provides a kind of finishing mill support roll locking device, including locking plate and two fixed blocks, fixed block is equipped with fixed through-hole, fixed block is fixed on the face of arch by connecting piece through fixed through-hole, the upper and lower sides of each fixed block are formed with guide slot, locking plate is recessed and formed with two sliding slots, and the upper and lower sides of each sliding slot in locking plate are formed with guide block, the middle part of locking plate is equipped with long hole, locking plate is connected on the face of arch by connecting piece through long hole, and the side of fixed block close to the face of arch is set out of locking plate. So push locking plate to act in fixed block guide slot, because the side of fixed block close to the face of arch is set out of locking plate, so that locking plate is not close to the face of arch, so that action is smooth, and there is no friction loss problem;And fixed block does not participate in action;The guide slot of fixed block also plays the role of guiding movement, can avoid the problem that locking plate is inclined and cannot be completely withdrawn.

Description

Technical Field

[0001] This utility model relates to the field of locking technology for support rolls of finishing mills, and in particular to a locking device for support rolls of finishing mills. Background Technology

[0002] During the rolling mill production process, it was found that after a certain working time, the dimensions of the mill stand window would change. This caused the axes of the work roll and the support roll to intersect. At this time, the contact friction of the roll surfaces caused the support roll to move in a spiral motion relative to the work roll, and the axial force acting on the support roll was in the same direction as the vector force. This resulted in axial misalignment of the support roll, which affected the axial movement of the work roll and the control of the strip shape during the rolling process.

[0003] In existing technologies, locking structures are used to restrict the axial movement of the support rollers to prevent them from shifting outwards. However, this structure will encounter the following problems after a period of use:

[0004] 1. The locking plate is not lubricated when it comes into contact with the archway surface. When the nut is fully tightened, the locking plate is difficult to move. However, if the bolt is not fully tightened, the support roller will move outward, affecting the control of the work roller or the plate shape.

[0005] 2. The bolt holes of the fixing bolts and locking plate are severely worn;

[0006] 3. After the bolt holes of the locking plate and the fixing bolts are worn, the locking plate may tilt, resulting in incomplete operation.

[0007] Therefore, it is necessary to propose a locking device for the support rolls of a finishing mill to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0008] The main purpose of this utility model is to provide a locking device for the support roll of a finishing mill, so as to solve the problems of inconvenient movement and poor locking effect of the locking plate when it is fixed in the prior art.

[0009] To achieve the above objectives, this utility model provides a locking device for the support roll of a finishing mill, comprising a locking plate and two fixing blocks arranged vertically opposite each other; wherein,

[0010] The fixing block has a fixing through hole that extends horizontally, and the fixing block is fixed to the archway surface by a connector passing through the fixing through hole.

[0011] Each of the fixing blocks has a longitudinally extending guide groove recessed on both its upper and lower sides. The locking plate has two sliding grooves recessed, and each sliding groove of the locking plate has a guide block protruding on both its upper and lower sides, which corresponds to the guide groove. The locking plate is connected to the guide groove through the guide block to be slidably connected to the fixing block in the longitudinal direction. The locking plate has an elongated hole in the middle that extends laterally, and the long side of the elongated hole extends longitudinally. The locking plate is connected to the archway surface through the elongated hole by a connector.

[0012] The fixing block extends from the locking plate on the side closest to the archway.

[0013] Preferably, each of the fixing blocks has a guide groove recessed to form a lubrication groove, and each of the fixing blocks also has an oil inlet channel; wherein,

[0014] The oil inlet channel includes a vertical section and a horizontal section. The two ends of the vertical section are respectively connected to the two guide grooves. The first end of the horizontal section is connected to the vertical section. The second end of the horizontal section extends from the first end toward the side away from the archway surface to receive lubricating oil.

[0015] Preferably, the connector includes a stud and a nut, the nut being connected to the end of the stud away from the archway surface, and the stud being used to pass through the fixing through hole and the elongated hole to connect with the archway surface.

[0016] Preferably, it further includes an anti-wear sleeve, which is fitted onto the double-ended stud in the locking plate to be disposed in the elongated hole.

[0017] Preferably, the anti-wear sleeve is stepped, comprising a small-diameter section and a large-diameter section, the small-diameter section being disposed in the elongated hole, and the large-diameter section having a diameter greater than the width of the elongated hole to abut against the nut and the locking plate.

[0018] Preferably, the thickness of the fixing block extending from the locking plate on the side near the archway surface is 2mm to 3mm.

[0019] Preferably, it further includes a locking cylinder, wherein the locking plate has a connecting groove on one side along the longitudinal direction, and the driving end of the locking cylinder is connected to the connecting groove and is longitudinally telescopically arranged.

[0020] Preferably, each of the fixed blocks contains two oil inlet channels, which are arranged longitudinally at intervals.

[0021] Preferably, in each of the fixed blocks, two oil inlet channels are respectively distributed on both sides of the fixed through hole, and one of the oil inlet channels is located near the bottom of the corresponding groove.

[0022] Preferably, the radial length of the large-diameter section along the vertical direction is 2mm to 4mm larger than the width of the elongated hole.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides a locking device for a finishing mill support roll, comprising a locking plate and two fixing blocks arranged vertically opposite each other. The fixing blocks have fixing through holes arranged horizontally. The fixing blocks are fixed to the archway surface by means of a connector passing through the fixing through holes. Each fixing block has a guide groove extending longitudinally recessed on both the upper and lower sides. The locking plate has two sliding grooves recessed, and each sliding groove of the locking plate has a guide block protruding on both the upper and lower sides corresponding to the guide groove. The locking plate is connected to the guide groove through the guide block to be slidably connected to the fixing block in the longitudinal direction. The locking plate has an elongated hole arranged horizontally through the middle, and the long side of the elongated hole extends longitudinally. The locking plate is connected to the archway surface by means of a connector passing through the elongated hole. The side of the fixing block closest to the archway surface extends out of the locking plate. The locking plate is pushed to move within the guide groove of the fixing block. Since the side of the fixing block closest to the archway extends out of the locking plate, the locking plate does not come into contact with the archway surface, so the movement is smooth and there is no friction wear problem. The fixing block is completely fixed and does not participate in the movement. The guide groove of the fixing block also plays a guiding role, which can prevent the locking plate from tilting and failing to fully retract. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional schematic diagram of the overall structure in one embodiment of the present utility model;

[0027] Figure 2 This is an exploded view of the overall structure in one embodiment of the present invention;

[0028] Figure 3 This is a side view of the overall structure in one embodiment of the present utility model;

[0029] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0030] Figure 5This is a perspective view of the locking plate in one embodiment of the present utility model;

[0031] Figure 6 This is a three-dimensional schematic diagram of a fixing block in one embodiment of the present utility model;

[0032] Figure 7 This is a cross-sectional schematic diagram of the fixing block in one embodiment of the present invention.

[0033] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0034] Explanation of icon numbers:

[0035] 10. Locking plate; 110. Slide groove; 120. Guide block; 130. Long hole; 140. Anti-wear sleeve; 141. Small diameter section; 142. Large diameter section; 150. Locking cylinder; 20. Fixing block; 210. Fixing through hole; 220. Guide groove; 230. Lubrication groove; 240. Oil inlet channel; 241. Vertical section; 242. Horizontal section; 30. Connecting piece; 310. Double-ended stud; 320. Nut. Detailed Implementation

[0036] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0039] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0040] Please see the appendix Figures 1-7 This utility model provides a locking device for a finishing mill support roll, comprising a locking plate 10 and two vertically opposite fixing blocks 20. First, it should be noted that in this application, "longitudinal" refers to the length direction of the fixing blocks 20 (the sliding direction of the locking plate 10), and "lateral" refers to the width direction of the fixing blocks 20, as shown in the accompanying drawings. Unlike existing technologies where the locking plate 10 is inconvenient to move during fixing and has poor locking effect if not fully fixed, this application addresses these shortcomings by providing a locking device for a finishing mill support roll, as detailed below:

[0041] The fixing block 20 has a through hole 210 extending laterally. The fixing block 20 is fixed to the archway surface by a connector 30 passing through the through hole 210. Each fixing block 20 has a guide groove 220 extending longitudinally recessed on both its upper and lower sides. The locking plate 10 has two sliding grooves 110 recessed. Each sliding groove 110 of the locking plate 10 has a guide block 120 protruding on both its upper and lower sides, corresponding to the guide groove 220. The locking plate 10 is connected to the guide groove 220 through the guide block 120 to be slidably connected to the fixing block 20 longitudinally. The locking plate 10 has an elongated hole 130 extending laterally in its middle. The long side of the elongated hole 130 extends longitudinally. The locking plate 10 is connected to the archway surface by a connector 30 passing through the elongated hole 130. The side of the fixing block 20 closest to the archway surface extends out of the locking plate 10.

[0042] Specifically, the finishing mill support roll locking device in this application includes a locking plate 10 and two vertically opposite fixing blocks 20. The fixing blocks 20 are used to fix the locking plate 10 after installation. They are fixed to the archway surface by connectors 30 and are provided with two to reinforce the stability of the locking plate 10 connection. To ensure that the locking plate 10 is stably locked on the fixing blocks 20 and will not shift during movement, guide grooves 220 are formed on the upper and lower sides of the fixing blocks 20 to guide and limit the movement. Therefore, the two sliding grooves 110 of the locking plate 10 are used to match the fixed blocks 20, and guide blocks 120 are also formed on the upper and lower sides of each sliding groove 110 to match the guide grooves 220. Thus, the locking plate 10 is slidably inserted into the fixing blocks 20. After the fixing block 20 is installed, the guide block 120 is inserted into the guide groove 220 until the fixing block 20 is completely embedded in the sliding groove 110. Since the fixing block 20 is completely fixed, the guide groove 220 extending longitudinally can guide and limit the locking plate 10 during sliding adjustment. The locking plate 10 will not deviate or tilt when adjusting the locking effect, avoiding the problem of not being able to completely retract. When the locking plate 10 is connected to the archway surface, it adopts the form of setting an elongated hole 130. The long side of the elongated hole 130 extends longitudinally to ensure that the locking plate 10 can slide smoothly to adjust the locking effect, while also limiting the sliding range of the locking plate 10, preventing it from falling off due to excessive sliding.

[0043] When prefabricating the fixing block 20 and the locking plate 10, one side of the locking plate 10 needs to be slightly thinner than the fixing block 20 (i.e., one side of the fixing block 20 extends beyond the locking plate 10). Please refer to the appendix for details. Figure 3 and attached Figure 4 Thus, during installation, the protruding side of the fixing block 20 is installed facing the archway surface. Under the lateral locking action of the guide groove 220 and the guide block 120, the side of the locking plate 10 near the archway surface will not directly contact the archway surface, while the fixing block 20 will directly contact the archway surface. In this way, the locking plate 10 will not directly contact the archway surface during sliding, thus increasing friction and ensuring smooth operation. The thickness of the side of the fixing block 20 near the archway surface extending from the locking plate 10 is 2mm to 3mm. In a preferred embodiment of this application, it can be set to 2mm, that is, the side of the locking plate 10 near the archway surface is 2mm thinner than the fixing block 20. The specific value can be set by those skilled in the art according to actual needs.

[0044] In a preferred embodiment of this utility model, each of the fixing blocks 20 has a lubrication groove 230 recessed at the guide groove 220, and each of the fixing blocks 20 also has an oil inlet channel 240; wherein,

[0045] The oil inlet channel 240 includes a vertical section 241 and a horizontal section 242. The two ends of the vertical section 241 are respectively connected to the two guide grooves 220. The first end of the horizontal section 242 is connected to the vertical section 241. The second end of the horizontal section 242 extends from the first end toward the side away from the archway surface to receive lubricating oil.

[0046] It should be noted that the lubrication groove 230 is used to increase the smoothness of sliding between the fixing block 20 and the locking plate 10 to reduce sliding friction. It is specifically set at the position where the guide groove 220 contacts the locking plate 10 vertically. In order to facilitate oil inlet, the fixing block 20 is also provided with an oil inlet channel 240. Technicians can add lubricating oil into the lubrication groove 230 through this oil inlet channel 240. The oil inlet channel 240 includes a vertical section 241 and a horizontal section 242. It can be understood that the upper and lower guide grooves 220 of a fixing block 20 are respectively provided with lubrication grooves 230. Therefore, the vertical section 241 is used to connect the upper and lower lubrication grooves 230, while the horizontal section 242 is used to introduce lubricating oil, so that it can flow back to the vertical section 241 and then be distributed to the two lubrication grooves 230. It should be noted that the second end (oil inlet end) of the horizontal section 242 should be set on the side of the fixing block 20 away from the archway surface, so as to facilitate the technician to add oil.

[0047] In a preferred embodiment of the present invention, the connector 30 includes a double-ended stud 310 and a nut 320. The nut 320 is connected to the end of the double-ended stud 310 away from the archway surface. The double-ended stud 310 is used to pass through the fixing through hole 210 and the elongated hole 130 respectively to connect with the archway surface.

[0048] It should be noted that both ends of the double-ended stud 310 are threaded to facilitate the connection of two fasteners. One end extends into the archway surface for threaded connection, while the other end is reinforced by a nut 320. It is worth mentioning that the outer diameter of the double-ended stud 310 must correspond to the diameter of the fixing through hole 210 and the vertical width of the elongated hole 130 to ensure that there will be no vertical gaps between the components after installation, which would cause vertical loosening.

[0049] As a preferred embodiment of the present invention, it also includes an anti-wear sleeve 140, which is sleeved on the double-headed stud 310 in the locking plate 10 and disposed in the elongated hole 130.

[0050] It is worth noting that the anti-wear sleeve 140 can reduce the wear between the elongated hole 130 and the double-ended stud 310 inside the locking plate 10 when it slides. Therefore, the anti-wear sleeve 140 is sleeved on the double-ended stud 310 in the locking plate 10 and disposed in the elongated hole 130. As a preferred embodiment of the present invention, the anti-wear sleeve 140 is stepped, and the stepped shape can form different diameters for the section of the anti-wear sleeve 140 extending out of the elongated hole 130, thus including a small diameter section 141 and a large diameter section 142. The small diameter section 141 is disposed in the elongated hole 130 to reduce the wear between the inside of the elongated hole 130 and the double-ended stud 310. To reduce sliding wear between the head studs 310, the diameter of the large-diameter section 142 is larger than the width of the elongated hole 130 to abut against the nut 320 and the locking plate 10, thereby reducing wear between the walls of the nut 320 and the locking plate 10. This effectively reduces bolt wear and improves the service life of the structure. Preferably, the radial length of the large-diameter section 142 in the vertical direction is 2mm to 4mm larger than the width of the elongated hole 130, meaning that the large-diameter section 142 is 2mm to 4mm higher than the width of the elongated hole 130 in the vertical direction. Those skilled in the art can set this according to actual conditions.

[0051] Furthermore, it also includes a locking cylinder 150, wherein the locking plate 10 has a connecting groove on one side along the longitudinal direction, and the driving end of the locking cylinder 150 is connected to the connecting groove and is longitudinally telescopically arranged.

[0052] It should be understood that the locking cylinder 150 is used to drive the locking plate 10 to slide and adjust the locking effect. Its driving end is connected to the connecting groove on the locking plate 10 to push / pull back the locking plate 10 when it extends or retracts in the longitudinal direction.

[0053] Furthermore, each of the fixed blocks 20 has two oil inlet channels 240, and the two oil inlet channels 240 are arranged longitudinally at intervals.

[0054] It should be noted that, considering that the fixing block 20 has a fixing through hole 210 for connection and installation, one oil inlet channel 240 may cause the oil to not be evenly distributed when it is distributed. Therefore, two oil inlet channels 240 can be set to increase the number of oil inlet positions and ensure the lubrication effect.

[0055] Furthermore, in each of the fixed blocks 20, two oil inlet channels 240 are respectively distributed on both sides of the fixed through hole 210, and one of the oil inlet channels 240 is set close to the bottom of the corresponding slide groove 110.

[0056] It should be noted that the two oil inlet channels 240 are respectively distributed on both sides of the fixed through hole 210 so that the front and rear (along the longitudinal direction) of the fixed block 20 have the effect of oil lubrication. One of the oil inlet channels 240 is located near the bottom of the corresponding slide groove 110, which can be closer to the end of the fixed block 20 and the bottom of the slide groove 110 of the locking plate 10, thereby improving the lubrication effect at this location.

[0057] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A locking device for support rolls of a finishing mill, characterized in that, It includes a locking plate and two fixing blocks arranged vertically opposite each other; wherein, The fixing block has a fixing through hole that extends horizontally, and the fixing block is fixed to the archway surface by a connector passing through the fixing through hole. Each of the fixing blocks has a longitudinally extending guide groove recessed on both its upper and lower sides. The locking plate has two sliding grooves recessed, and each sliding groove of the locking plate has a guide block protruding on both its upper and lower sides, which corresponds to the guide groove. The locking plate is connected to the guide groove through the guide block to be slidably connected to the fixing block in the longitudinal direction. The locking plate has an elongated hole in the middle that extends laterally, and the long side of the elongated hole extends longitudinally. The locking plate is connected to the archway surface through the elongated hole by a connector. The fixing block extends from the locking plate on the side closest to the archway.

2. The locking device for the support rolls of a finishing mill according to claim 1, characterized in that, Each of the fixed blocks has a guide groove recessed to form a lubrication groove, and each of the fixed blocks also has an oil inlet channel; wherein, The oil inlet channel includes a vertical section and a horizontal section. The two ends of the vertical section are respectively connected to the two guide grooves. The first end of the horizontal section is connected to the vertical section. The second end of the horizontal section extends from the first end toward the side away from the archway surface to receive lubricating oil.

3. The locking device for the support rolls of a finishing mill according to claim 1, characterized in that, The connector includes a double-ended stud and a nut. The nut is connected to the end of the double-ended stud away from the archway surface. The double-ended stud is used to pass through the fixing through hole and the elongated hole to connect with the archway surface.

4. The locking device for the support rolls of a finishing mill according to claim 3, characterized in that, It also includes an anti-wear sleeve, which is fitted onto a double-ended stud in the locking plate and positioned in the elongated hole.

5. The locking device for the support rolls of a finishing mill according to claim 4, characterized in that, The anti-wear sleeve is stepped, comprising a small diameter section and a large diameter section. The small diameter section is disposed in the elongated hole, and the diameter of the large diameter section is greater than the width of the elongated hole to abut against the nut and the locking plate.

6. The locking device for the support rolls of a finishing mill according to claim 1, characterized in that, The thickness of the fixing block extending from the locking plate on the side closest to the archway surface is 2mm to 3mm.

7. The locking device for the support rolls of a finishing mill according to claim 1, characterized in that, It also includes a locking cylinder, wherein the locking plate has a connecting groove on one side along the longitudinal direction, and the driving end of the locking cylinder is connected to the connecting groove and is longitudinally telescopically arranged.

8. The locking device for the support roll of a finishing mill according to claim 2, characterized in that, Each of the fixed blocks has two oil inlet channels, which are arranged longitudinally at intervals.

9. The locking device for the support rolls of a finishing mill according to claim 2, characterized in that, In each of the fixed blocks, two oil inlet channels are respectively distributed on both sides of the fixed through hole, and one of the oil inlet channels is located near the bottom of the corresponding slide groove.

10. The locking device for the support roll of a finishing mill according to claim 5, characterized in that, The radial length of the large-diameter section along the vertical direction is 2mm to 4mm larger than the width of the elongated hole.

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