Expansion shaft sleeve for uncoiler

Abstract

The utility model relates to a collapsible shaft sleeve for an uncoiler, and belongs to the technical field of metallurgical equipment. According to the technical scheme, the device comprises four fan-shaped plates, a plurality of connecting mechanisms are arranged between every two adjacent fan-shaped plates, the connecting mechanisms are used for connecting every two adjacent fan-shaped plates, and the four fan-shaped plates are sequentially connected end to end in the circumferential direction through the connecting structures; and at least one fan-shaped plate between two adjacent fan-shaped plates and the same connecting mechanism is in floating connection with the connecting mechanism. Through floating connection of the arranged connecting mechanism and the sector plates, the distance between the sector plates and the connecting mechanism can be adjusted under the working condition of needing to adapt to different sizes, and then the working diameter of the shaft sleeve defined by the four sector plates is adjusted; the diameter-increasing plate is not required to be mounted by bolts, and a diameter-increasing sleeve with a fixed diameter is not required to be mounted.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, and particularly relates to a telescopic shaft sleeve for an uncoiler. Background Art

[0002] The main specifications of the diameters of the mandrels of the uncoilers and coilers in domestic cold rolling treatment lines are two types: φ510 and φ610. For each specific mandrel diameter, it can only be applicable to the uncoiling or coiling of a steel coil with one inner diameter.

[0003] At present, the existing measures for increasing the diameter of the mandrel often adopt several fixed-size diameter-increasing plates, and then the method of setting the diameter-increasing plates on the mandrel of the uncoiler or coiler through fasteners. According to the different inner diameters of the steel coils, different sizes of diameter-increasing plates need to be selected to achieve the diameter-increasing function. In this way, different sizes of diameter-increasing plates need to be replaced according to the different inner diameters of the steel coils. Since the connection form between the diameter-increasing plate and the mandrel is bolt fastening, and the loading and unloading site conditions at the mandrel are unsafe and very harsh, the labor and time required to replace a set of diameter-increasing plates are very large. If the bolts show phenomena such as bald heads or slipping threads due to multiple dismountings, then the time required to replace a set of diameter-increasing plates is 4 - 8 hours, which greatly limits the operation efficiency of the production line.

[0004] In addition, in the industry, there is also a method of using a fixed-size diameter-increasing sleeve. According to the different inner diameters of the steel coils, integral diameter-increasing sleeves with different diameter-increasing sizes are prepared according to the outer diameter of the mandrel. The diameter-increasing sleeve is placed into the inner cavity of the steel coil by means of an upper sleeve device. Since both the inner diameter of the steel coil and the size of the diameter-increasing sleeve are within a certain range of sizes, it is very difficult to control the matching relationship between them, which has a greater impact on the formation and value of the tension. At the same time, since the diameter-increasing sleeve is installed and disassembled by hard pressing, the wear of the diameter-increasing sleeve is very large, and there are relatively high requirements for the number of spare parts of the diameter-increasing sleeve and the site occupation. Summary of the Utility Model

[0005] Aiming at the problems in the prior art, the utility model provides a telescopic shaft sleeve that can adapt to various different sizes, solves the problem of time-consuming and laborious installation of the diameter-increasing plate by bolts in the prior art, and at the same time solves the problems of large wear during the installation and disassembly of the fixed-size diameter-increasing sleeve and the need to prepare multiple sets.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] A telescopic shaft sleeve for a decoiler, comprising four sector plates, with a number of connecting mechanisms arranged between adjacent two sector plates. The connecting mechanisms are used to connect the adjacent two sector plates. The four sector plates are sequentially connected end to end in the circumferential direction through the connecting structure. There is at least one sector plate floatingly connected to the connecting mechanism between adjacent two sector plates and the same connecting mechanism. Through the floating connection between the set connecting mechanism and the sector plates, it is possible to adjust the distance between the sector plates and the connecting mechanism under working conditions that need to adapt to different sizes, and further realize the adjustment of the working diameter of the shaft sleeve formed by the four sector plates, without the need to install an increasing-diameter plate with bolts or install an increasing-diameter sleeve with a fixed diameter.

[0008] Preferably, the sector plate includes a sector-shaped bottom plate and connecting plates fixed to both outer ends of the bottom plate. The two ends of the connecting mechanism are respectively connected to two adjacent connecting plates, and the connecting mechanism is floatingly connected to at least one of the connecting plates it connects. By arranging the connecting plates on the outer side of the bottom plate, during maintenance and adjustment, the staff can directly inspect, repair, and replace the connecting plates on the outer side of the bottom plate and the connecting mechanism, avoiding the need for maintenance inside the shaft sleeve and completing the inspection and repair of a single connecting mechanism without disassembly.

[0009] Preferably, connection holes are provided on the connecting plates. The connecting mechanism includes a bolt sequentially passing through the two connecting plates and a nut threadedly connected to the bolt. The fastening end of the bolt and the nut are arranged on both sides of the two connecting plates.

[0010] Preferably, a return spring is provided between the fastening end and the connecting plate close to the fastening end, and between the nut and the connecting plate close to the nut. The return spring is always in a compressed state. By providing the return spring, when the use is completed, the shaft sleeve will automatically shrink under the action of the return spring without manual adjustment.

[0011] Preferably, gaskets are provided between the return spring and the fastening end, and between the return spring and the nut.

[0012] Preferably, a number of reinforcing ribs are evenly arranged on the outer side surface of the bottom plate, and the height of the reinforcing ribs is not lower than the height of the connecting plates. By providing the reinforcing ribs, the acting area between the shaft sleeve and the inner diameter of the reel can be increased, making the connection between the reel and the shaft sleeve more stable.

[0013] Preferably, a flat groove is provided on the bottom plate for placing the connecting mechanism, and protective plates are also provided on the bottom plate on both sides of the flat groove. The height of the protective plates is not lower than the height of the connecting mechanism. By providing the flat groove and the protective plates, it is possible to facilitate the installation and debugging of the connecting mechanism on a plane, and at the same time protect the adjusting mechanism without affecting the maintenance of the adjusting mechanism.

[0014] As can be seen from the above technical solutions, the advantages of the present utility model are as follows: through the floating connection between the connection mechanism and the sector plate, the distance between the sector plate and the connection mechanism can be adjusted under working conditions that need to adapt to different sizes, thereby realizing the adjustment of the working diameter of the bushing formed by the four sector plates. There is no need to install an increasing-diameter plate with bolts or install an increasing-diameter sleeve with a fixed diameter. By arranging the connecting plate on the outside of the bottom plate, during maintenance and adjustment, the staff can directly inspect, repair, and replace the connecting plate and the connection mechanism on the outside of the bottom plate, avoiding the need for maintenance inside the bushing and completing the inspection and repair of a single connection mechanism without disassembly. Through the arranged return spring, after use, the bushing will automatically shrink under the action of the return spring without manual adjustment. Through the arranged reinforcing ribs, the acting area between the bushing and the inner diameter of the drum can be increased, making the connection between the drum and the bushing more stable. Through the arranged flat groove and guard plate, it is convenient to install and debug the connection mechanism on a plane, and at the same time, the adjustment mechanism can be protected without affecting the maintenance of the adjustment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the specific implementation manner of the present utility model.

[0017] Figure 2 It is a partial structural schematic Figure 1 。

[0018] Figure 3 It is a partial structural schematic Figure 2 。

[0019] In the figure: 1, sector plate; 2, connection mechanism; 3, bottom plate; 4, connecting plate; 5, connection hole; 6, bolt; 7, nut; 8, return spring; 9, gasket; 10, reinforcing rib; 11, guard plate; 12, flat groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the following will clearly and completely describe the technical solutions in the present utility model in conjunction with the accompanying drawings in the specific embodiments. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0021] Embodiment:

[0022] As Figures 1 - 3 shown, a telescopic shaft sleeve for a decoiler includes four sector plates 1, and a plurality of connecting mechanisms 2 are arranged between two adjacent sector plates 1. The connecting mechanisms 2 are used to connect two adjacent sector plates 1. The four sector plates 1 are sequentially connected end to end in the circumferential direction through the connecting structure. There is at least one sector plate 1 floatingly connected to the connecting mechanism 2 between two adjacent sector plates 1 and the same connecting mechanism 2. With such a setting, through the floating connection between the connecting mechanism 2 and the sector plate 1, the distance between the sector plate 1 and the connecting mechanism 2 can be adjusted when it is necessary to adapt to working conditions of different sizes, thereby realizing the adjustment of the working diameter of the shaft sleeve formed by the four sector plates 1. It is not necessary to install an increasing-diameter plate with bolts 6 or install an increasing-diameter sleeve with a fixed diameter.

[0023] In this embodiment, the sector plate 1 includes a sector-shaped bottom plate 3 and connecting plates 4 fixed to both outer ends of the bottom plate 3. Both ends of the connecting mechanism 2 are respectively connected to two adjacent connecting plates 4, and the connecting mechanism 2 is at least floatingly connected to one of the connecting plates 4 it is connected to. Connecting holes 5 are formed in the connecting plates 4. The connecting mechanism 2 includes a bolt 6 sequentially passing through the two connecting plates 4 and a nut 7 threadedly connected to the bolt 6. The fastening end of the bolt and the nut 7 are arranged on both sides of the two connecting plates 4. With such a setting, by arranging the connecting plates 4 on the outer side of the bottom plate 3, during maintenance and adjustment, the staff can directly inspect, repair, and replace the connecting plates 4 on the outer side of the bottom plate 3 and the connecting mechanism 2, avoiding the need for maintenance inside the shaft sleeve, and at the same time, the inspection and repair of a single connecting mechanism 2 can be completed without disassembly.

[0024] In this embodiment, a return spring 8 is arranged between the fastening end and the connecting plate 4 close to the fastening end, and between the nut 7 and the connecting plate 4 close to the nut 7. The return spring 8 is always in a compressed state. Gaskets 9 are arranged between the return spring 8 and the fastening end, and between the return spring 8 and the nut 7. With such a setting, through the arranged return spring 8, when the use is completed, the shaft sleeve will automatically shrink under the action of the return spring 8 without manual adjustment.

[0025] In this embodiment, a number of reinforcing ribs 10 are evenly arranged on the outer side surface of the bottom plate 3. In this embodiment, the reinforcing ribs 10 and the connecting mechanism 2 are arranged in sequence along the length direction of the sector plate 1. The height of the reinforcing ribs 10 is not lower than the height of the connecting plate 4. With such a setting, by providing the reinforcing ribs 10, the acting area between the bushing and the inner diameter of the drum can be increased, making the connection between the drum and the bushing more stable.

[0026] In this embodiment, a flat groove 12 is formed on the bottom plate 3. The flat groove 12 is used to place the connecting mechanism 2. On the bottom plate 3 on both sides of the flat groove 12, guard plates 11 are further provided. The height of the guard plates 11 is not lower than the height of the connecting mechanism 2. With such a setting, by providing the flat groove 12 and the guard plates 11, the connecting mechanism 2 can be conveniently arranged on a plane for installation and debugging, and at the same time, the adjusting mechanism can be protected without affecting the maintenance of the adjusting mechanism.

[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A telescopic shaft sleeve for a decoiler, comprising four sector plates (1), characterized in that, A number of connecting mechanisms (2) are provided between two adjacent sector plates (1). The connecting mechanisms (2) are used to connect two adjacent sector plates (1). The four sector plates (1) are connected end to end in sequence in the circumferential direction through the connecting structure. There is at least one sector plate (1) floatingly connected to the connecting mechanism (2) between two adjacent sector plates (1) and the same connecting mechanism (2).

2. The expandable and contractible shaft sleeve for the decoiler according to claim 1, wherein, The sector plate (1) includes a sector-shaped bottom plate (3) and connecting plates (4) fixed to both outer ends of the bottom plate (3). Both ends of the connecting mechanism (2) are connected to two adjacent connecting plates (4), and the connecting mechanism (2) is floatingly connected to at least one of the connecting plates (4) it is connected to.

3. The expanding and contracting shaft sleeve for the decoiler according to claim 2, characterized in that, A connecting hole (5) is formed in the connecting plate (4). The connecting mechanism (2) includes a bolt (6) sequentially passing through the two connecting plates (4) and a nut (7) threadedly connected to the bolt (6). The fastening end of the bolt (6) and the nut (7) are arranged on both sides of the two connecting plates (4).

4. The expanding and contracting shaft sleeve for the decoiler according to claim 3, characterized in that, A return spring (8) is provided between the fastening end and the connecting plate (4) near the fastening end, and between the nut (7) and the connecting plate (4) near the nut (7). The return spring (8) is always in a compressed state.

5. The expandable and contractible shaft sleeve for the decoiler according to claim 4, wherein, A gasket (9) is provided between the return spring (8) and the fastening end, and between the return spring (8) and the nut (7).

6. The expanding and contracting shaft sleeve for a decoiler according to any one of claims 2-5, characterized in that, A number of reinforcing ribs (10) are evenly arranged on the outer side surface of the bottom plate (3). The height of the reinforcing ribs (10) is not lower than the height of the connecting plate (4).

7. The expandable and contractible shaft sleeve for the decoiler according to claim 6, characterized in that, A flat groove (12) is formed in the bottom plate (3). The flat groove (12) is used to place the connecting mechanism (2). Guard plates (11) are also provided on the bottom plate (3) on both sides of the flat groove (12). The height of the guard plates (11) is not lower than the height of the connecting mechanism (2).

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