Cold rolling sink roll smooth running device

Abstract

The present application relates to the technical field of cold rolling sinking roller operation, and discloses a kind of cold rolling sinking roller smooth running device, including horizontal roll sleeve, roll sleeve hollow, including the middle section in the middle part of roll sleeve, the extension section in the both sides of middle section, the outside section in the outside of extension section and the end head section in the end of roll sleeve, the inner diameter of end head section is greater than the inner diameter of outside section, which is greater than the inner diameter of extension section, which is greater than the inner diameter of middle section, first reinforcing rib plate is arranged between extension section and middle section in roll sleeve, second reinforcing rib plate is arranged between outside section and extension section, end plate is arranged in end head section, horizontal shaft head is arranged on end plate, counterweight flange is sleeved on shaft head and closely attached to end plate, shaft head is assembled on bearing seat, a plurality of equally divided circular holes are arranged on first reinforcing rib plate and second reinforcing rib plate.The present application can guarantee the smooth running of sinking roller, prolong the service life of sinking roller, reduce the equipment failure rate, improve efficiency and meet the requirements of cold rolling strip steel production technology.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cold rolling sinking roll operation, in particular to a kind of cold rolling sinking roll smooth running device. BACKGROUND

[0002] Hot galvanizing is the most economical and effective method to prevent steel corrosion at present, with the increasingly wide application of cold rolling automobile plate and household appliance plate, the requirement of users for the surface quality of strip steel is higher and higher.The main equipment of strip steel hot galvanizing unit is zinc pot, and its sinking roll device is the main part of zinc pot.The sinking roll is immersed in 470 DEG C molten zinc liquid, and it is easy to deform and run unstably, and it is corroded by very active zinc liquid, and pitting is easy to occur on roll surface, a large amount of zinc slag is easy to adhere to wear roll surface, and to form mark on the surface of strip steel, causing uneven thickness of its surface.

[0003] In addition, zinc liquid enters bearing to corrode and wear bearing bush, and the bearing is blocked from rotating unstably, and the sinking roll is easy to shake, and vibration mark is easy to occur on the surface of strip steel, affecting the surface quality of hot galvanizing product, affecting the service life of sinking roll, and causing a large amount of waste and energy loss. SUMMARY

[0004] The purpose of the present application is to solve the above technical problems, provide a kind of cold rolling sinking roll smooth running device, guarantee the smooth running of sinking roll, prolong the service life of sinking roll, reduce the failure rate of equipment, improve efficiency, and meet the requirements of cold rolling strip steel production technology.

[0005] To achieve the above purpose, the cold rolling sinking roll smooth running device designed by the present application includes a horizontal roll sleeve, the roll sleeve is hollow, including a middle section located in the middle of the roll sleeve, an extension section located on both sides of the middle section, an outer section located on the outside of the extension section and an end section located at the end of the roll sleeve, the inner diameter of the end section is greater than the inner diameter of the outer section, which is greater than the inner diameter of the extension section, which is greater than the inner diameter of the middle section, a first reinforcing rib plate is provided between the extension section and the middle section in the roll sleeve, a second reinforcing rib plate is provided between the outer section and the extension section, and an end plate is provided on the end section to improve its strength and stiffness, reduce the weight of the roll sleeve, a horizontal shaft head is provided on the end plate, a counterweight flange is fitted on the shaft head and tightly attached to the end plate, the dynamic balance of the roll sleeve is adjusted to make it move smoothly, the shaft head is assembled on the bearing seat, and a plurality of equally divided circular holes are provided on the first and second reinforcing rib plates.

[0006] Preferably, the surface of the roll sleeve is provided with left and right spiral grooves from the center to both sides, so that the zinc slag flows smoothly and does not adhere to the roll surface.

[0007] Preferably, the left spiral groove and the right spiral groove are sprayed with wear-resistant and corrosion-resistant nano WC-Co material, so that the zinc slag is not easy to adhere to the surface of the roller cover, and the roller cover surface is more wear-resistant and corrosion-resistant, thereby avoiding the surface imprint of the strip steel.

[0008] Preferably, the bearing seat comprises a shaft sleeve sleeved on the shaft head, the shaft sleeve is sleeved with a bearing bush, the bearing bush is sleeved with a bushing, the periphery of the bushing is combined with an upper shaft seat and a lower shaft seat, one end of the bushing extends inward to abut against the end of the bearing bush, the other end of the bushing is provided with a step on the inward side, the shaft head is provided with a sealing flange mounted on the step, the bearing seat is provided with a sealing cover on the side close to the roller cover and an end cover on the other side, and the sealing cover is fixedly installed on the upper shaft seat, the lower shaft seat and the sealing flange through bolts, and the end cover is fixedly installed on the upper shaft seat, the lower shaft seat and the bushing through bolts.

[0009] Preferably, the nut of the bolt is provided with a bolt protection cover, so as to avoid corrosion of the bolt by the zinc liquid, facilitate dismounting of the bolts of the bearing seat, and facilitate replacement of the shaft sleeve and the bearing bush.

[0010] Preferably, the sealing cover is provided with a first graphite seal between the upper shaft seat, the lower shaft seat and the sealing flange, so as to prevent the zinc liquid from entering the bearing and corroding and wearing the shaft sleeve and the bearing bush, and affecting the stable operation thereof.

[0011] Preferably, the end cover is provided with a second graphite seal between the upper shaft seat, the lower shaft seat and the bushing, so as to prevent the zinc liquid from entering the bearing and corroding and wearing the shaft sleeve and the bearing bush, and affecting the stable operation thereof.

[0012] Preferably, the bearing bush is provided with a third graphite seal between the bearing bush and the bushing, so as to prevent the zinc liquid from entering the bearing and corroding and wearing the shaft sleeve and the bearing bush, and affecting the stable operation thereof.

[0013] Preferably, the bearing bush and the bushing are provided with a fourth graphite seal between the bearing bush and the sealing flange, so as to prevent the zinc liquid from entering the bearing and corroding and wearing the shaft sleeve and the bearing bush, and affecting the stable operation thereof.

[0014] Compared with the prior art, the application has the following advantages:

[0015] 1. The roller cover with a hollow structure is light in weight, and the strength and rigidity thereof are improved by the reinforcing rib plates, the dynamic balance is maintained by the counterweight flanges added at the two ends of the roller cover, and the operation is stable.

[0016] 2. The zinc slag flows more smoothly from the spiral grooves on the left and right sides of the center of the roller cover.

[0017] 3. The nano WC-Co material with wear resistance and corrosion resistance is sprayed in the grooves of the roller cover, so that the zinc slag is not easy to adhere to the surface of the roller cover, and the surface of the roller cover is more wear-resistant and corrosion-resistant, thereby avoiding the surface imprint of the strip steel.

[0018] 4. The roller sleeve has a good sealing effect on the bushing and bearing, which avoids corrosion and wear from the zinc liquid, resulting in a long service life and stable operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the cold rolling submerged roll smooth operation device of the present invention;

[0020] Figure 2 This is a schematic diagram of the outer surface of the cold rolling submerged roll smooth operation device of the present invention;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the bearing housing.

[0022] The components in the diagram are labeled as follows:

[0023] Roller sleeve 1, middle section 2, extension section 3, outer section 4, end section 5, first reinforcing rib plate 6, second reinforcing rib plate 7, end plate 8, shaft head 9, counterweight flange 10, round hole 11, left spiral groove 12, right spiral groove 13, shaft sleeve 14, bearing shell 15, bushing 16, upper shaft seat 17, lower shaft seat 18, sealing flange 20, sealing cover 21, end cover 22, bolt 23, bolt protection cover 24, first graphite seal 25, second graphite seal 26, third graphite seal 27, fourth graphite seal 28. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1 As shown, the present invention discloses a cold rolling submerged roll smooth operation device, comprising a horizontal roll sleeve 1, the roll sleeve 1 being hollow, including a middle section 2 located in the middle of the roll sleeve 1, extension sections 3 located on both sides of the middle section 2, an outer section 4 located outside the extension section 3, and an end section 5 located at the end of the roll sleeve 1. The inner diameter of the end section 5 is greater than the inner diameter of the outer section 4, greater than the inner diameter of the extension section 3, and greater than the inner diameter of the middle section 2. A first reinforcing rib plate 6 is provided inside the roll sleeve 1 between the extension section 3 and the middle section 2, and a second reinforcing rib plate 7 is provided between the outer section 4 and the extension section 3. An end plate 8 is provided on the end section 5, and a horizontal shaft head 9 is provided on the end plate 8. A counterweight flange 10 is fitted on the shaft head 9 and closely attached to the end plate 8. The shaft head 9 is assembled on a bearing seat. The first reinforcing rib plate 6 and the second reinforcing rib plate 7 are provided with a plurality of evenly distributed circular holes 11.

[0026] In addition, such as Figure 2As shown, the surface of the roller sleeve 1 is provided with a left spiral groove 12 and a right spiral groove 13 from the center to both sides, so that the zinc slag flows smoothly and does not adhere to the roller surface. The left spiral groove 12 and the right spiral groove 13 are sprayed with a wear-resistant and corrosion-resistant nano WC-Co material, so that the zinc slag is not easy to adhere to the surface of the roller sleeve 1, and the surface of the roller sleeve 1 is more wear-resistant and corrosion-resistant, avoiding the surface marks of the strip steel.

[0027] In this embodiment, as shown in the figure, Figure 3 The bearing seat includes a shaft sleeve 14 sleeved on the shaft head 9, the shaft sleeve 14 is sleeved with a bearing bush 15, the bearing bush 15 is sleeved with a bushing 16, the bushing 16 is surrounded by an upper shaft seat 17 and a lower shaft seat 18, one end of the bushing 16 extends inward to abut against the end of the bearing bush 15, the other end of the bushing 16 is provided with a step on the inner side, the shaft head 9 is provided with a sealing flange 20 installed on the step, the bearing seat is provided with a sealing cover 21 on the side close to the roller sleeve 1 and an end cover 22 on the other side, the sealing cover 21 is fixedly installed on the upper shaft seat 17, the lower shaft seat 18 and the sealing flange 20 by bolts 23, and the end cover 22 is fixedly installed on the upper shaft seat 17, the lower shaft seat 18 and the bushing 16 by bolts 23.

[0028] In this embodiment, the nut of the bolt 23 is provided with a bolt protection cover 24 to avoid corrosion of the bolt 23 by zinc liquid and facilitate disassembly and replacement of the shaft sleeve 14 and the bearing bush 15.

[0029] In this embodiment, the sealing cover 21, the upper shaft seat 17, the lower shaft seat 18 and the sealing flange 20 are padded with a first graphite seal 25, the end cover 22, the upper shaft seat 17, the lower shaft seat 18 and the bushing 16 are padded with a second graphite seal 26, the bearing bush 15 and the bushing 16 are padded with a third graphite seal 27, and the bearing bush 15, the bushing 16 and the sealing flange 20 are padded with a fourth graphite seal 28, so as to prevent zinc liquid from entering the bearing and corroding and wearing the shaft sleeve 14 and the bearing bush 15, affecting the smooth operation thereof.

[0030] In the assembly of this embodiment, the first step is to process the roller sleeve 1 according to the figure; the second step is to assemble one piece of the first reinforcing rib plate 6 to the left and right of the middle section 2 and the extension section 3 respectively and fix them at the steps; the third step is to assemble one piece of the second reinforcing rib plate 7 to the left and right of the extension section 3 and the outer section 4 respectively and fix them at the steps; the fourth step is to assemble one piece of the end plate 8 to the left and right of the end section 5 and fix it; the fifth step is to assemble one piece of the shaft head 9 to the left and right of the end plate 8 and fix it, and to assemble one piece of the counterweight flange 10 to the left and right of the shaft head 9 and tightly abut against the end plate 8; the sixth step is to spray the left spiral groove 12 and the right spiral groove 13 with a wear-resistant and corrosion-resistant nano WC-Co material.

[0031] In addition, the mounting sequence of the bearing seat is: firstly, assembling the bushing 16, the third graphite seal 27, the bearing bush 15, the fourth graphite seal 28, the sealing flange 20, the shaft sleeve 14, the upper shaft seat 17, and the lower shaft seat 18; secondly, installing the first graphite seal 25, the sealing cover 21, the shaft head 9, the second graphite seal 26, and the end cover 22, and fixing the bolt 23 on the upper shaft seat 17 and the lower shaft seat 18; and finally, installing the bolt protection cover 24.

[0032] The present application improves the strength and stiffness of the roller cover 1 by adding reinforcing plates inside the roller cover 1 and adding left and right end plates 8 at both ends of the roller cover 1, and reduces the weight of the entire roller cover 1. In addition, a counterweight flange 10 is added to each side of the left and right end plates 8 of the roller cover 1 to adjust the dynamic balance of the roller cover 1 to make it move smoothly.

[0033] In addition, the surface of the roller cover 1 is designed as a groove spiraling to the left and right from the center, and the size of the groove is such that the zinc slag flows smoothly and does not adhere to the roller surface. In addition, the groove is sprayed with a nano WC-Co material that is wear-resistant and corrosion-resistant after machining, so that the zinc slag is not easy to adhere to the surface of the roller cover 1, the surface of the roller cover 1 is more wear-resistant and corrosion-resistant, and the surface marks of the strip steel are avoided.

[0034] Finally, graphite seals are added to both end faces of the bearing seat, and end covers 22 and sealing covers 21 are added respectively for sealing, implementing two-way sealing, preventing zinc liquid from entering the bearing, corroding and wearing the shaft sleeve 14 and the bearing bush 15, affecting the smooth operation of the bearing, and fixing the bolt 23 to the two end faces of the bearing seat. The outside of the bolt 23 is provided with a protection cover to avoid the corrosion of the zinc liquid to the bolt 23, facilitate the disassembly of the bolt 23 of the bearing seat, facilitate the replacement of the shaft sleeve 14 and the bearing bush 15, prolong the service life of the roller cover 1, make the roller cover 1 run smoothly, meet the production technical requirements, and meet the quality requirements of the strip steel product.

[0035] The cold rolling submerged roller stable operation device has a hollow structure, a light weight, and reinforcing plates to improve the strength and stiffness of the roller cover 1. The counterweight flange 10 is added to both ends of the roller cover 1 to maintain dynamic balance and work stably. The groove spiraling to the left and right from the center of the roller cover 1 makes the zinc slag flow more smoothly. The groove of the roller cover 1 is sprayed with a nano WC-Co material that is wear-resistant and corrosion-resistant, so that the zinc slag is not easy to adhere to the surface of the roller cover 1, the surface of the roller cover 1 is more wear-resistant and corrosion-resistant, and the surface marks of the strip steel are avoided. The sealing effect of the shaft sleeve 14 and the bearing bush 15 of the roller cover 1 is good, avoiding the corrosion and wear of the zinc liquid, and prolonging the service life and the smooth operation of the roller cover 1.

Claims

1. A cold rolling sink roll smooth running device comprising a horizontal roll sleeve (1), characterized in that: The roller sleeve (1) is hollow, comprising a middle section (2) in the middle of the roller sleeve (1), an extension section (3) on both sides of the middle section (2), an outer side section (4) on the outside of the extension section (3), and an end section (5) at the end of the roller sleeve (1). The inner diameter of the end section (5) is larger than that of the outer side section (4), which is larger than that of the extension section (3), which is larger than that of the middle section (2). The roller sleeve (1) is provided with a first reinforcing rib plate (6) between the extension section (3) and the middle section (2), a second reinforcing rib plate (7) between the outer side section (4) and the extension section (3), and an end plate (8) in the end section (5). The end plate (8) is provided with a horizontal shaft head (9). The shaft head (9) is provided with a counterweight flange (10) and is tightly attached to the end plate (8). The shaft head (9) is assembled on a bearing seat. The first reinforcing rib plate (6) and the second reinforcing rib plate (7) are provided with a plurality of equally divided circular holes (11). The bearing seat comprises a shaft sleeve (14) fitted on the shaft head (9). The shaft sleeve (14) is fitted with a bearing bush (15). The bearing bush (15) is fitted with a bushing (16). The bushing (16) is surrounded by an upper shaft seat (17) and a lower shaft seat (18). One end of the bushing (16) extends inward to the end of the bearing bush (15). The other end of the bushing (16) is provided with a step on the inner side. The shaft head (9) is provided with a sealing flange (20) installed on the step. The bearing seat is provided with a sealing cover (21) on the side close to the roller sleeve (1) and an end cover (22) on the other side. The sealing cover (21) is fixedly installed on the upper shaft seat (17), the lower shaft seat (18), and the sealing flange (20) by bolts (23). The end cover (22) is fixedly installed on the upper shaft seat (17), the lower shaft seat (18), and the bushing (16) by bolts (23).

2. The smooth running device for a cold rolling sink roll according to claim 1, wherein: The surface of the roller sleeve (1) is provided with a left spiral groove (12) and a right spiral groove (13) on both sides of the center.

3. The smooth running device for a sink roll of a cold rolling mill according to claim 2, characterized in that: The left spiral groove (12) and the right spiral groove (13) are sprayed with a wear-resistant and corrosion-resistant nano WC-Co material.

4. The smooth running device for a cold rolling sink roll according to claim 1, wherein: The nut of the bolt (23) is provided with a bolt protection cover (24).

5. The smooth running device for a cold rolling sink roll according to claim 1, wherein: The sealing cover (21) is provided with a first graphite seal (25) between the upper shaft seat (17), the lower shaft seat (18), and the sealing flange (20).

6. The smooth running device for a cold rolling sink roll according to claim 1, wherein: The end cover (22) is provided with a second graphite seal (26) between the upper shaft seat (17), the lower shaft seat (18), and the bushing (16).

7. The smooth running device for a cold rolling sink roll according to claim 1, wherein: The bearing bush (15) is provided with a third graphite seal (27) between the bushing (16).

8. The smooth running device for a cold rolling sink roll according to claim 1, wherein: The bearing bush (15) and the bushing (16) are provided with a fourth graphite seal (28) between the sealing flange (20).

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