Combined loop rising roller of rolling unit in high-speed wire rod rolling mill

Abstract

The utility model relates to the technical field of loop-rising rollers, and discloses a rolling unit combined loop-rising roller in a high-speed wire rod rolling mill, which comprises a loop-rising roller outer sleeve, a loop-rising roller inner sleeve is detachably and fixedly sleeved in the loop-rising roller outer sleeve, and a support roller is rotatably sleeved on the inner side of the loop-rising roller inner sleeve. A connecting pipe is fixed to the upper end and the lower end of the supporting roller in a penetrating mode, the connecting pipe at one end of the supporting roller is fixedly connected to an output pipe of a water suction pump in a penetrating mode, and a matching key is fixed to the outer surface of the inner sleeve of the loop-rising roller. The problem that a rolling unit combined loop rising roller in an existing high-speed wire rod rolling mill is poor in cooling effect during use is solved, the problems that the rising roller deforms due to temperature rise, the service life is short, and even steel heaping or rolled piece scratching is caused by burning loss of a rising roller bearing are solved, and the rolling unit combined loop rising roller is suitable for high-speed wire rod rolling mills. And the service life of the loop rising roller is greatly prolonged.

Description

Technical Field

[0001] The utility model application relates to the technical field of loosening rollers, in particular to a combined loosening roller for a rolling mill group in a high-speed wire rod rolling mill. Background Art

[0002] The main function of the pre-finishing mill is to perform preliminary shaping on the incoming materials from the roughing and intermediate rolling mills and provide billets with qualified appearance for the finishing mill. A loop is generally designed between every two rolling mills in the pre-finishing mill. The purpose of the loop control is to achieve tension-free rolling between two adjacent stands to maintain good surface shape and dimensional accuracy of the intermediate rolled pieces.

[0003] During normal production, the starting rollers in the looper are always in contact with the high-speed moving high-temperature rolled workpiece. The starting rollers wear quickly and have poor heat dissipation and cooling performance. Especially when there is a lack of cooling water or the looper setting is unreasonable, resulting in pressure contact between the starting rollers and the rolled workpiece, the service life of the starting rollers is short, and there may even be problems such as the starting roller bearings burning out, resulting in steel piling or scratches on the rolled workpiece. Summary of the Invention

[0004] In order to solve the problem that the combined looper rolls of the rolling mill group in the existing high-speed wire rod rolling mill have poor cooling effect during use, the utility model provides a combined looper rolls of the rolling mill group in the high-speed wire rod rolling mill to solve the above problem.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A combined loose-loop roll for a rolling mill group in a high-speed wire rod mill comprises an outer sleeve of the roll, a detachable fixed sleeve inside the outer sleeve of the roll is provided with an inner sleeve of the roll, a support roller is rotatably sleeved on the inner side of the inner sleeve of the roll, connecting pipes are fixed through the upper and lower ends of the support roller, one end of the connecting pipe is fixedly connected to the output pipe of a water pump, a mating key is fixed on the outer surface of the inner sleeve of the roll, and a key groove is provided on the inner ring of the outer sleeve of the roll to cooperate with the mating key.

[0007] Furthermore, the outer sleeve of the lifting roller is made of tungsten carbide, the inner sleeve of the lifting roller is made of cast steel, and an "I"-shaped rotating hole is provided inside the inner sleeve of the lifting roller to cooperate with the support roller.

[0008] Furthermore, the input pipe of the water pump is externally connected to the water outlet of the clean cold water tank through a water pipe, and a cold water cavity is opened inside the supporting roller.

[0009] Furthermore, a limiting clamping plate is fixed to the bottom surface of the mating key, a limiting clamping groove that cooperates with the limiting clamping plate is opened on the bottom surface of the keyway, a fixed clamping plate is fixed to the inner side of the top surface of the keyway, and a fixing screw is sleeved inside the fixed clamping plate, the bottom surface of the fixing screw is fixed on the mating key, and the fixing screw passes through to the end above the fixed clamping plate and is threaded with a fixing nut.

[0010] Furthermore, the mating key and the inner sleeve of the sleeve-lifting roller are provided with a groove that cooperates with the fixed clamping plate, and the height of the fixed screw is smaller than the height of the groove.

[0011] Furthermore, a socket that cooperates with the fixing screw is provided inside the fixing clamping plate, and the distance between the fixing clamping plate and the top surface of the keyway is equal to the height of the fixing nut.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. In the utility model, through the cold water design in the support roller, the runoff cold water can quickly cool down the cover roller, solving the problem of poor cooling effect of the combined loose cover roller of the rolling mill group in the existing high-speed wire mill during use, avoiding the deformation of the cover roller caused by temperature increase, the short service life, and even the burning of the cover roller bearing resulting in steel piling or scratching of the rolled piece, thereby greatly improving the service life of the cover roller.

[0014] 2. In the present invention, the outer sleeve of the lifting roller is conveniently driven to rotate by the key and the keyway. At the same time, the detachable design of the upper and lower limit switches facilitates the quick fixation of the outer sleeve of the lifting roller and the inner sleeve of the lifting roller after assembly. The fixing operation is simple and convenient, which greatly improves the convenience of using the lifting roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 This is a front view schematic diagram of a cover-lifting roller structure according to an embodiment of the present application;

[0017] Figure 2 yes Figure 1 A front view schematic diagram of the split structure of the cover roller in the embodiment shown;

[0018] Figure 3 yes Figure 1 A schematic front view of a partial structural cross section of the embodiment shown;

[0019] Figure 4 yes Figure 1 The schematic bottom view of the jacket structure of the lifting roller in the embodiment shown is shown.

[0020] The meanings of the reference numerals in the figure are: 1. Outer sleeve of the lifting roller; 2. Inner sleeve of the lifting roller; 3. Support roller; 4. Connecting pipe; 5. Water pump; 6. Matching key; 7. Keyway; 8. Fixing plate; 9. Fixing screw; 10. Fixing nut; 11. Limiting plate; 12. Limiting slot. DETAILED DESCRIPTION

[0021] In order to make the purpose, features, and advantages of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described below are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] Reference Figure 1 、 Figure 2 and Figure 3 A combined loose-loop roller for a rolling mill in a high-speed wire rod rolling mill comprises a roller outer shell 1, a detachable fixed sleeve inside the roller outer shell 1 is provided with a roller inner shell 2, the roller outer shell 1 is made of tungsten carbide, and the roller inner shell 2 is made of cast steel. An "I"-shaped rotating hole is provided inside the roller inner shell 2 to cooperate with the support roller 3, and the support roller 3 is rotatably sleeved on the inner side of the roller inner shell 2. Connecting pipes 4 are fixed through the upper and lower ends of the support roller 3, and one end of the connecting pipe 4 is fixedly connected to the output pipe of a water pump 5. The input pipe of the water pump 5 is connected to the water outlet of the clean cold water tank through a water pipe. A cold water cavity is provided inside the support roller 3, and a matching key 6 is fixed on the outer surface of the roller inner shell 2. The inner ring of the roller outer shell 1 is provided with a key slot 7 that cooperates with the matching key 6.

[0023] Specifically, when the outer sleeve 1 and the inner sleeve 2 of the jacketing roller need to be used, the input pipe of the water pump 5 is connected to the water outlet of the clean cold water tank through a water pipe, and then the water pump 5 is turned on to pump cold water into the interior of the support roller 3 through the water pump 5 to cool the outer sleeve 1 and the inner sleeve 2 of the jacketing roller, and then the water is discharged through the connecting pipe 4 after cooling.

[0024] As an optimization solution, Figure 3 and Figure 4As shown, a limiting card plate 11 is fixed to the bottom surface of the mating key 6, and a groove is provided inside the mating key 6 and the inner sleeve 2 of the lifting roller to cooperate with the fixing card plate 8. The height of the fixing screw 9 is less than the height of the groove. A limiting card groove 12 is provided on the bottom surface of the keyway 7 to cooperate with the limiting card plate 11. A fixing card plate 8 is fixed on the inner side of the top surface of the keyway 7. A socket is provided inside the fixing card plate 8 to cooperate with the fixing screw 9. The distance between the fixing card plate 8 and the top surface of the keyway 7 is equal to the height of the fixing nut 10, and a fixing screw 9 is sleeved inside the fixing card plate 8. The bottom surface of the fixing screw 9 is fixed on the mating key 6, and the fixing screw 9 passes through the fixing card plate 8 and a fixing nut 10 is threadedly sleeved on one end above the fixing card plate 8.

[0025] Specifically, when it is necessary to install the outer sleeve 1 of the lifting roller and the inner sleeve 2 of the lifting roller, align the keyway 7 with the mating key 6. After alignment, put the outer sleeve 1 of the lifting roller on the inner sleeve 2 of the lifting roller from the end of the fixed screw 9, and make the limiting clamp 11 engage with the inside of the limiting clamp 12, and at the same time drive the fixed clamp 8 to be put on the fixed screw 9, and finally screw the fixing nut 10 onto the fixed screw 9 to fix it. When disassembling, screw the fixing nut 10 and remove the outer sleeve 1 of the lifting roller to the end of the fixed screw 9.

[0026] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and scope of the appended claims are intended to be included herein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0027] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A combined looper roll for a rolling mill in a high-speed wire rod mill, characterized by: The invention comprises a cover roller outer sleeve (1), a cover roller inner sleeve (2) is provided in a detachable fixed sleeve inside the cover roller outer sleeve (1), a support roller (3) is rotatably sleeved inside the cover roller inner sleeve (2), a connecting pipe (4) is fixedly passed through the upper and lower ends of the support roller (3), one end of the connecting pipe (4) is passed through and fixedly connected to the output pipe of a water pump (5), a matching key (6) is fixed on the outer surface of the cover roller inner sleeve (2), and a key groove (7) is provided on the inner ring of the cover roller outer sleeve (1) to match the matching key (6).

2. The combined looper roll for the rolling mill group of a high-speed wire rod mill according to claim 1, characterized in that: The outer sleeve (1) of the lifting roller is made of tungsten carbide, the inner sleeve (2) of the lifting roller is made of cast steel, and an "I"-shaped rotation hole is provided inside the inner sleeve (2) of the lifting roller to cooperate with the support roller (3).

3. The combined looper roll for the rolling mill group of a high-speed wire rod mill according to claim 1, characterized in that: The input pipe of the water pump (5) is externally connected to the water outlet of the clean cold water tank through a water pipe, and a cold water cavity is provided inside the support roller (3).

4. The combined looper roll for the rolling mill group of a high-speed wire rod mill according to claim 1, characterized in that: The bottom surface of the mating key (6) is fixed with a limiting card plate (11), the bottom surface of the keyway (7) is provided with a limiting card groove (12) that matches the limiting card plate (11), the inner side of the top surface of the keyway (7) is fixed with a fixing card plate (8), and the inside of the fixing card plate (8) is sleeved with a fixing screw (9), the bottom surface of the fixing screw (9) is fixed on the mating key (6), and the fixing screw (9) passes through the fixing card plate (8) and is threadedly sleeved with a fixing nut (10) at one end.

5. The combined looper roll for the rolling mill group of a high-speed wire rod mill according to claim 4, characterized in that: A groove that cooperates with the fixed clamping plate (8) is provided inside the matching key (6) and the inner sleeve (2) of the sleeve-lifting roller, and the height of the fixing screw (9) is smaller than the height of the groove.

6. The combined looper roll for the rolling mill train of a high-speed wire rod mill according to claim 5, characterized in that: The fixing plate (8) is provided with a socket that cooperates with the fixing screw (9), and the distance between the fixing plate (8) and the top surface of the keyway (7) is equal to the height of the fixing nut (10).

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