Inlet guide and guard device of deformed steel rolling mill and steel rolling mill

Abstract

The inlet guide and guard device comprises an upper roller and a lower roller, two oppositely-arranged guide and guard mechanisms are arranged on the front side of the space between the upper roller and the lower roller, the guide and guard mechanisms are installed on a fixedly-arranged cross beam plate in a sliding mode, a locking component is arranged between each guide and guard mechanism and the cross beam plate, and each guide and guard mechanism comprises a guide and guard assembly. A fixing block is arranged on the outer side of the guide and guard assembly, a fine adjustment threaded piece penetrates through the fixing block and is in threaded connection with the fixing block, and the inner end of the fine adjustment threaded piece is matched with the guide and guard assembly to achieve fine adjustment of the guide and guard assembly. And the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel rolling mills, in particular to an entrance guide device for a special-shaped steel rolling mill and a steel rolling mill. Background Art

[0002] The statements herein only provide background art related to the utility model and do not necessarily constitute prior art.

[0003] The entrance guide device for a special-shaped steel rolling mill refers to a device installed in front of the roll pass during the hot rolling process of special-shaped steel to help the rolled piece accurately and stably enter the pass in a predetermined direction and state. It includes an upper roll and a lower roll, and a space for the steel billet to pass through is formed between the upper roll and the lower roll. On the front side of the inlets of the upper roll and the lower roll, there are two oppositely arranged guide mechanisms for clamping the steel billet so that the steel billet can smoothly enter the space between the upper roll and the lower roll. The inventor found that the current entrance guide device has the following defects during operation:

[0004] 1. The entrance guide is not wear-resistant. When it needs to be replaced, the machine needs to be stopped, resulting in a reduction in the production capacity of the production rolling line. Moreover, when the entrance guide cannot be repaired, it must be scrapped as a whole, with a relatively high cost.

[0005] 2. After the entrance guide is replaced, the position and width of the entrance need to be readjusted. Without a fine-tuning device, it is difficult for the staff to adjust it to the best stable state, and the machine adjustment time is too long, affecting the production progress. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art, and provide an entrance guide device for a special-shaped steel rolling mill and a steel rolling mill, which is provided with a fine-tuning device, reduces the machine adjustment time, improves the wear resistance of the entrance guide, ensures the production progress, and improves the production capacity of the production rolling line.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] In a first aspect, an embodiment of the utility model provides an entrance guide device for a special-shaped steel rolling mill, including an upper roll and a lower roll. On the front side of the space between the upper roll and the lower roll, there are two oppositely arranged guide mechanisms. The guide mechanisms are slidably installed on a fixedly arranged crossbeam plate and are provided with locking components between the guide mechanisms and the crossbeam plate. The guide mechanism includes a guide component. A fixed block is arranged outside the guide component, and a fine-tuning threaded member passes through the fixed block. The fine-tuning threaded member is threadedly connected to the fixed block, and the inner end of the fine-tuning threaded member cooperates with the guide component to achieve fine-tuning of the guide component.

[0009] Optionally, the threaded fine-tuning member adopts a fine-tuning bolt. The rod portion of the fine-tuning bolt is threadedly connected to the fixed block, and after the rod portion of the fine-tuning bolt passes through the fixed block, its inner end is used to cooperate with an adjustment block arranged on the outer side surface of the guide component.

[0010] Optionally, after the rod portion of the fine-tuning bolt passes through the fixing block, its inner end portion can abut against the adjusting block provided on the outer side surface of the guard assembly, or the rod portion of the fine-tuning bolt is rotatably connected to the adjusting block.

[0011] Optionally, the fine-tuning bolt is threadedly connected to the fixing block through the internal threaded hole of the fixing block.

[0012] Or

[0013] A light hole is provided in the fixing block, the rod portion of the fine-tuning bolt passes through the fixing block through the light hole, and at least one side surface perpendicular to the fine-tuning bolt of the fixing block is fixed with an internal threaded member coaxial with the light hole, and the rod portion of the fine-tuning bolt is threadedly connected to the internal threaded member.

[0014] Optionally, the internal threaded member is a first nut fixed on the side surface of the fixing block.

[0015] Optionally, the guard assembly includes a guard block, a groove is provided on the inner side surface of the guard block for contacting the steel blank, a wear-resistant block is embedded in the groove, the wear-resistant block is detachably connected to the guard block, and the inner side surface of the wear-resistant block is flush with the inner side surface of the guard block.

[0016] Optionally, the wear-resistant block adopts an L-shaped structure, including a vertical portion embedded in the groove, a horizontal portion is provided at the top of the vertical portion, and the bottom surface of the horizontal portion contacts the top surface of the guard block and is detachably fixed to the guard block through at least one threaded fixing member.

[0017] Optionally, a connecting block is provided at the bottom of the outer side surface of the guard assembly, a locking bolt passes through the connecting block, a long strip chute parallel to the axis of the fine-tuning threaded member is provided on the cross beam plate, the locking bolt passes through the cross beam plate through the long strip chute and is threadedly connected to a locking member, and the first locking member is pressed against the bottom surface of the cross beam plate.

[0018] Optionally, the locking member is a second nut, and the second nut is threadedly connected to the locking bolt and pressed against the bottom surface of the cross beam plate.

[0019] In a second aspect, an embodiment of the present invention provides a steel rolling mill provided with the special-shaped steel rolling mill inlet guard device described in the first aspect.

[0020] The beneficial effects of the above-mentioned present invention are as follows:

[0021] 1. The entrance guard device of the present utility model is provided with a fixing block on the outer side of the guard component. The fixing block is fixed on the crossbeam plate and is threadedly connected with a fine-tuning threaded member. The inner end of the fine-tuning threaded member is used to cooperate with the guard component. Thus, after rotating the fine-tuning threaded member, the fine-tuning threaded member can finely adjust the position of the guard component, thereby realizing the fine adjustment of the distance between the two guard components, making it easy to adjust the two guard components to the best stable state, reducing the machine adjustment time, and improving the production efficiency.

[0022] 2. In the entrance guard device of the present utility model, a wear-resistant block is embedded in the groove of the guard block, which increases the wear resistance of the guard component, extends the service life of the guard component, reduces the replacement frequency of the guard component, improves the production efficiency and the production capacity of the production rolling line. Moreover, the wear-resistant block is detachably connected to the guard block, and the wear-resistant block is convenient to replace. When wear occurs, there is no need to scrap and replace the entire guard component, reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The specification drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation to this application.

[0024] Figure 1 is the overall structural schematic diagram of Embodiment 1 of the present utility model;

[0025] Figure 2 is the schematic diagram of the fine-tuning mechanism of Embodiment 1 of the present utility model;

[0026] Figure 3 is the present utility model Figure 1 in the schematic view in the direction of A;

[0027] Figure 4 is the present utility model Figure 3 in the schematic view in the direction of B;

[0028] Figure 5 is the present utility model Figure 1 in the schematic view in the direction of C;

[0029] Among them, 1. Fine-tuning mechanism, 2. Wear-resistant block, 3. Fixing bolt, 4. Guard block, 5. Crossbeam plate, 6. Connecting block, 7. Locking bolt, 8. Lower roller, 9. Lower roller shaft, 10. Lower roller seat, 11. Upper roller seat, 12. Upper roller shaft, 13. Upper roller, 14. Long strip chute, 15. Second nut;

[0030] 1-1. Adjusting block, 1-2. Fixing block, 1-3. First nut, 1-4. Fine-tuning bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Embodiment 1

[0032] This embodiment provides an entrance guard device for a special-shaped steel rolling mill, as Figures 1 - 5 shown, which includes an upper roll 13 and a lower roll 8. A space for the steel blank to pass through is formed between the upper roll 13 and the lower roll 8. The upper roll 13 is connected to the upper roll shaft 12, and both ends of the upper roll shaft 12 are rotatably connected to the upper roll seat 11. The lower roll 8 is connected to the lower roll shaft 9, and both ends of the lower roll shaft 9 are rotatably connected to the lower roll seat 10.

[0033] In front of the space between the upper roll 13 and the lower roll 8, there is a cross beam plate 5. The cross beam plate 5 is fixedly arranged, and two guard mechanisms are arranged on the cross beam plate 5. The two guard mechanisms are arranged oppositely and are used to clamp the steel blank, so that the steel blank can smoothly enter the space between the upper roll and the lower roll.

[0034] The guard mechanism includes a guard component. The guard component includes a guard block 4. The guard block 4 is slidably connected to the cross beam plate 5 and there is a locking component between the guard block 4 and the cross beam plate 5. The sliding direction of the guard block 4 along the cross beam plate 5 is perpendicular to the feeding direction of the steel blank.

[0035] Specifically, a connecting block 6 is vertically arranged at the bottom of the outer side surface of the guard block 4. There is a through hole on the connecting block 6, and a locking bolt 7 passes through the through hole. There is a long strip chute 14 on the cross beam plate 5. The long axis of the long strip chute 14 is perpendicular to the feeding direction of the steel blank. The locking bolt 7 passes through the connecting block 6 and the cross beam plate 5. The locking bolt 7 passes through the cross beam plate 5 and is threadedly connected to the locking component. The locking component locks and fixes the connecting block 6 and the cross beam plate 5. In this embodiment, the locking component adopts a second nut 15. The second nut 15 is threadedly connected to the locking bolt 7. The second nut 15 is pressed against the bottom surface of the cross beam plate 5, and the head of the locking bolt 7 is pressed against the upper surface of the connecting block 6, thus realizing the locking and fixing of the connecting block 6 and the cross beam plate 5. Loosen the second nut 15, so that the guard block 4 can move along the long strip chute 14, thus realizing the rough adjustment of the distance between the two guard blocks 4.

[0036] The above structures can all adopt the structures of the existing guard devices, and their further technical details will not be described in detail here. This embodiment is improved on the basis of the existing guard device, adding a fine adjustment mechanism 1 and wear-resistant blocks 2. The fine adjustment mechanism and the guard component together constitute the guard mechanism, and the guard block and the wear-resistant block together constitute the guard component.

[0037] The fine adjustment structure 1 includes a fixed block 1-2 welded and fixed on the cross beam plate 5. The fixed block 1-2 is arranged outside the guard block 4. A fine adjustment threaded part passes through the fixed block 1-2. In this embodiment, the fine adjustment threaded part adopts a fine adjustment bolt 1-4. The rod part of the fine adjustment bolt 1-4 passes through the fixed block 1-2, and its inner end is used to cooperate with an adjustment block 1-1 welded and fixed to the outer side surface of the guard block 4 to finely adjust the position of the guard block 4.

[0038] In this embodiment, a threaded hole is provided in the fixing block 1-2. The fine-tuning bolt is threadedly connected to the fixing block 1-2. The inner end of the rod portion of the fine-tuning bolt 1-4 can abut against the inner side surface of the adjusting block 1-1, so as to finely adjust the position of the guard block 4. In this way, only the two guard blocks 4 can be finely adjusted to move towards each other.

[0039] In another embodiment, the rod portion of the fine-tuning bolt 1-4 is rotatably connected to the adjusting block 1-1 through a bearing, or an annular protrusion is provided at the end of the rod portion of the fine-tuning bolt 1-4. The annular protrusion is embedded in the annular groove provided in the adjusting block 1-1, and the annular protrusion is rotatably connected to the adjusting block 1-1 through the annular groove, so as to realize the fine adjustment of the two guard blocks 4 moving towards each other and moving away from each other.

[0040] The fine-tuning bolt 1-4 is directly threadedly connected to the fixing block 1-2 through the threaded hole. In another embodiment, a light hole is provided in the fixing block 1-2. The fine-tuning bolt 1-4 passes through the fixing block 1-2 through the light hole. Among the two side surfaces of the fixing block 1-2 perpendicular to the fine-tuning bolt 1-4, at least one side surface is welded and fixed with an internal threaded member coaxial with the light hole. In this embodiment, the internal threaded member adopts the first nut 1-3. The two side surfaces of the fixing block 1-2 are both welded and fixed with the first nut 1-3. The first nut 1-3 is threadedly connected to the rod portion of the fine-tuning bolt 1-4, and thus the threaded connection between the fine-tuning bolt 1-4 and the fixing block 1-2 is realized.

[0041] In this embodiment, after rotating the fine-tuning bolt 1-4, the fine-tuning bolt 1-4 can finely adjust the position of the guard assembly, so as to realize the fine adjustment of the distance between the two guard assemblies, making it easy to adjust the two guard assemblies to the best stable state, reducing the machine adjustment time, and improving the production efficiency.

[0042] A groove is opened in the area where the inner side surface of the guard block 4 is severely worn. A wear-resistant block 2 is embedded in the groove. The wear-resistant block 2 is detachably connected to the guard block 4 for easy replacement of the wear-resistant block. The inner side surface of the wear-resistant block is flush with the inner side surface of the guard block for the smooth passage of the steel billet.

[0043] In this embodiment, the wear-resistant block 2 is made of titanium carbide or TC4 titanium alloy, and those skilled in the art can select according to actual needs.

[0044] The wear-resistant block 2 adopts an L-shaped structure, including a vertical portion and a horizontal portion. The vertical portion is embedded in the groove provided in the guard block 4, and the inner side surface of the vertical portion is flush with the inner side surface of the guard block 4. The bottom surface of the horizontal portion is attached to the top surface of the guard block 4 and is detachably and fixedly connected to the guard block through at least one threaded fixing member.

[0045] In this embodiment, the threaded fixing member uses a fixing bolt 3. Preferably, two fixing bolts 3 are provided.

[0046] In this embodiment, by contacting the steel blank with the wear-resistant block 2, it is avoided that the existing severe wear areas of the guide guard block contact the steel blank, improving the wear resistance of the entire guide guard assembly, reducing the replacement frequency of the guide guard assembly, increasing the service life of the guide guard assembly, improving the production efficiency and the production capacity of the production rolling line. Moreover, the wear-resistant block and the guide guard block are detachably connected by the fixing bolt 3, and the wear-resistant block is convenient to replace. When wear occurs, it is not necessary to scrap and replace the entire guide guard assembly, reducing the maintenance cost.

[0047] The remaining structures of the guide guard device can adopt the prior art and will not be described in detail herein.

[0048] Embodiment 2

[0049] This embodiment provides a steel rolling mill, which is provided with the special-shaped steel rolling mill entrance guide guard device described in Embodiment 1. The remaining structures of the steel rolling mill can adopt the prior art and will not be described in detail herein.

[0050] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. An entrance guide device for a special-shaped steel rolling mill, comprising an upper roll and a lower roll. Two relatively arranged guide mechanisms are provided on the front side of the space between the upper roll and the lower roll. The guide mechanisms are slidably installed on a fixedly arranged crossbeam plate and a locking member is provided between the guide mechanisms and the crossbeam plate. It is characterized in that, The guard mechanism includes a guard component. A fixing block is provided on the outer side of the guard component. A fine-tuning threaded member passes through the fixing block. The fine-tuning threaded member is threadedly connected to the fixing block. The inner end of the fine-tuning threaded member cooperates with the guard component to achieve fine-tuning of the guard component.

2. The entrance guide device of a special-shaped steel rolling mill according to claim 1, characterized in that The threaded fine-tuning member is a fine-tuning bolt. The rod portion of the fine-tuning bolt is threadedly connected to the fixing block. After the rod portion of the fine-tuning bolt passes through the fixing block, its inner end is used to cooperate with an adjustment block provided on the outer side surface of the guard component.

3. The entrance guard device of a special-shaped steel rolling mill according to claim 2, characterized in that, After the rod portion of the fine-tuning bolt passes through the fixing block, its inner end can abut against an adjustment block provided on the outer side surface of the guard component, or the rod portion of the fine-tuning bolt is rotatably connected to the adjustment block.

4. The entrance guide device of a special-shaped steel rolling mill according to claim 2, characterized in that, The fine-tuning bolt is threadedly connected to the fixing block through an internal threaded hole of the fixing block. Or, A light hole is provided in the fixing block. The rod portion of the fine-tuning bolt passes through the fixing block through the light hole. Among the two side surfaces of the fixing block perpendicular to the fine-tuning bolt, at least one side surface is fixed with an internal threaded member coaxial with the light hole. The rod portion of the fine-tuning bolt is threadedly connected to the internal threaded member.

5. The entrance guard device of a special-shaped steel rolling mill according to claim 4, characterized in that The internal threaded member is a first nut fixed on the side surface of the fixing block.

6. The entrance guide device of a special-shaped steel rolling mill according to claim 1, characterized in that, The guard component includes a guard block. A groove is provided on the inner side surface of the guard block for contacting the steel blank. A wear-resistant block is embedded in the groove. The wear-resistant block is detachably connected to the guard block. The inner side surface of the wear-resistant block is flush with the inner side surface of the guard block.

7. The entrance guard device of a special-shaped steel rolling mill according to claim 6, characterized in that, The wear-resistant block adopts an L-shaped structure, including a vertical portion embedded in the groove. A horizontal portion is provided at the top of the vertical portion. The bottom surface of the horizontal portion contacts the top surface of the guard block and is detachably fixed to the guard block through at least one threaded fixing member.

8. The entrance guide device of a special-shaped steel rolling mill according to claim 1, characterized in that, A connecting block is provided at the bottom of the outer side surface of the guard component. A locking bolt passes through the connecting block. A long strip chute parallel to the axis of the fine-tuning threaded member is provided on the cross beam plate. The locking bolt passes through the cross beam plate through the long strip chute and is then threadedly connected to a locking component. The first locking component presses against the bottom surface of the cross beam plate.

9. The entrance guide device of a special-shaped steel rolling mill according to claim 8, characterized in that, The locking component is a second nut. The second nut is threadedly connected to the locking bolt and presses against the bottom surface of the cross beam plate.

10. A steel rolling mill, characterized in that, An entrance guard device for a special-shaped steel rolling mill according to any one of claims 1-9 is provided.

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