Fan-shaped block structure for cold rolling uncoiler

Abstract

The utility model discloses a fan-shaped block structure for a cold rolling uncoiler, which is provided with a fan-shaped block body, a plurality of first threaded holes are arranged on the fan-shaped block body, a threaded sleeve is arranged in each threaded hole, an external thread is arranged on the outer wall of each threaded sleeve, a second threaded hole is arranged on each threaded sleeve along the central axis, and the first threaded holes are communicated with the second threaded holes. The external thread is connected with the first threaded hole, and a gap at the joint of the external thread and the first threaded hole is filled with thread fastening glue; the device is used on an acid pickling uncoiler transformation line, and the effect of rapidly processing damaged bolt holes can be achieved. When maintenance is implemented, two persons can replace all damaged thread bushings within four hours, online treatment can be achieved, the fan-shaped blocks do not need to be disassembled, and the equipment maintenance time is saved. If bolt holes are damaged, the bolt holes can be timely treated, potential safety hazards are eliminated, and the spare part purchasing cost of the fan-shaped block of the uncoiler is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cold rolling pickling production line equipment, in particular to a fan-shaped block structure used for a cold rolling uncoiler. Background Art

[0002] The uncoiler is an important equipment in the cold rolling pickling production line. The uncoiler reel is a four-sector plate expansion and contraction type. The expansion and contraction of the reel is completed by the expansion and contraction cylinder. The expansion and contraction diameter is φ570~φ630mm. After the diameter increasing plate is installed, the expansion and contraction diameter can reach φ720~φ780mm. The diameter increasing plate needs to be installed during normal production of raw material coils. It must be removed when producing repair coils. The diameter increasing plate is fixed to the sector block by bolts. Each block has 6 fixing bolts (M24*3). There is a lot of iron oxide powder at the uncoiler, and the iron powder falls into the thread gap. The diameter increasing plate is frequently disassembled and assembled. Repeated disassembly and assembly cause serious wear of the bolt hole thread used to connect the diameter increasing plate; during production, the tail of the belt is easy to hook the gap between the diameter increasing plates, and the fixing bolts are often pulled off, and the bolt holes on the sector block are pulled out. The threads are damaged and the bolts cannot be installed, which will also cause the increasing plate to fall off during the production process. The fan-shaped block can only be disassembled to expand and tap the bolt holes when the machine is shut down. Since the fan-shaped block has been tempered, it is difficult to drill and tap online, and the thread is easy to be deflected, and the operation efficiency is extremely low. Three people can only process a few holes in 8 hours, and the repair time takes 2 days. The processed bolt holes will be damaged again after a period of use, and the hole expansion and tapping can only be continued, resulting in various specifications of bolt holes on the fan-shaped block of the uncoiler. Different specifications of increasing plate bolts must be made. It takes a long time for the operator to install the increasing plate, and the installation is not firm. Due to the damage of the thread, the increasing plate falls off, and the fan-shaped block cannot be used after multiple expansion and tapping, and can only be scrapped, seriously affecting the normal operation of the unit. Utility Model Content

[0003] The purpose of the utility model is to provide a fan-shaped block structure for a cold rolling uncoiler in view of the above situation. The implementation of the fan-shaped block structure can achieve the purpose of quickly repairing bolt holes and serve on-site equipment.

[0004] The specific scheme of the utility model is: a fan-shaped block structure for a cold rolling uncoiler, comprising a fan-shaped block body, a plurality of first threaded holes being opened on the fan-shaped block body, a threaded sleeve being installed in each of the threaded holes, an external thread being arranged on the outer wall of the threaded sleeve, a second threaded hole being opened along the central axis of the threaded sleeve, the external thread being connected to the first threaded hole, and a thread fastening glue being filled in the gap at the connection between the external thread and the first threaded hole.

[0005] Furthermore, in the present invention, the first threaded hole is a blind hole, and the second threaded hole is a through hole or a blind hole.

[0006] Furthermore, in the present invention, a circle of the upper end of the second threaded hole is arranged as a chamfered structure.

[0007] Furthermore, a chamfered structure is arranged around the outer edge of the upper port of the threaded sleeve in the utility model.

[0008] Furthermore, in the present invention, the specification of the first threaded hole is M40*3, and the specification of the external thread is M40*3.

[0009] Furthermore, in the present invention, the number of the first threaded holes is 6, three of which are arranged on the upper and lower parts of the sector block body, and two of them are arranged symmetrically up and down about the center line of the sector block body.

[0010] The utility model is put into use in the modification of the pickling uncoiler, and can achieve the effect of quickly handling damaged bolt holes. When implementing maintenance, two people can replace all damaged thread sleeves in 4 hours, and can handle it online without disassembling the fan-shaped block, saving equipment maintenance time. If the bolt hole is found to be damaged, it can be handled in time, eliminating safety hazards and reducing the spare parts procurement cost of the fan-shaped block of the uncoiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main viewing direction structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the utility model in a side view direction;

[0013] Figure 3 It is a schematic diagram of the cutaway structure of the threaded sleeve in the utility model;

[0014] Figure 4 It is a partial enlarged schematic diagram of the threaded sleeve connection in the utility model.

[0015] In the figure: 1—first threaded hole, 2—sector block body, 3—external thread, 4—chamfered structure, 5—second threaded hole, 6—thread fastener, 7—thread sleeve. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings of the utility model to clearly and completely describe the technical solution of the utility model. It is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model. In the description of the utility model, it should be noted that the terms "upper", "lower", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when used, which is only for the convenience of describing the utility model or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0017] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1 to Figure 4 The utility model is a fan-shaped block structure for a cold rolling uncoiler, having a fan-shaped block body 2, on which a plurality of first threaded holes 1 are provided. Further, in the utility model, the number of the first threaded holes is 6, three are arranged on the upper and lower sides of the fan-shaped block body, and two are arranged symmetrically about the center line of the fan-shaped block body. A threaded sleeve 7 is installed in each of the threaded holes, and an external thread 3 is arranged on the outer wall of the threaded sleeve. Further, in the utility model, the specification of the first threaded hole is M40*3, the specification of the external thread is M40*3, and the threaded sleeve is provided with a second threaded hole 5 along the central axis. The external thread is connected to the first threaded hole, and a threaded fastener 6 is filled in the gap at the connection between the external thread and the first threaded hole. Further, in the utility model, the first threaded hole is a blind hole, and the second threaded hole is a through hole or a blind hole. Further, in the utility model, the upper end of the second threaded hole is set as a chamfered structure 4. Furthermore, a chamfered structure is arranged around the outer edge of the upper port of the threaded sleeve in the utility model.

[0019] The structure of the sector block body in the utility model is consistent with the original sector block structure, and the first threaded holes thereon are all processed into M40*3, and threaded sleeves with external threads of M40*3 and internal threads of M24*3 are made at the same time. The threaded sleeves are coated with thread fastening glue, installed in the first threaded holes on the sector block, and tightened and fixed. When the internal threads of the threaded sleeve, i.e., the second threaded holes, are damaged and the diameter-increasing plate bolts cannot be installed, the threaded sleeves can be heated, and the thread fastening glue can be melted and removed to directly replace the new threaded sleeves, and then the new threaded sleeves can be coated with glue and installed again for use. The entire replacement process is very quick and convenient.

[0020] The replaced threaded sleeve can be fixed on the machine tool to expand and tap the second threaded hole and can be used again. At this time, the bolts of the connected diameter-increasing plate need to be replaced.

[0021] The outer diameter of each threaded sleeve in the utility model is constant, so the connection between the threaded sleeve and the first threaded hole is always unaffected, which is equivalent to the bolt connecting the diameter increasing plate being directly connected to the second threaded hole in the threaded sleeve. Of course, the specific sizes of the first and second threaded holes in the utility model can be designed according to needs.

[0022] The utility model is put into use in the modification of the pickling uncoiler, and can achieve the effect of quickly handling damaged bolt holes. When implementing maintenance, two people can replace all damaged thread sleeves in 4 hours, and can handle it online without disassembling the fan-shaped block, saving equipment maintenance time. If the bolt hole is found to be damaged, it can be handled in time, eliminating safety hazards and reducing the spare parts procurement cost of the fan-shaped block of the uncoiler.

Claims

1. A sector block structure for a cold rolling uncoiler, comprising a sector block body, wherein the sector block body is provided with a plurality of first threaded holes, wherein: A threaded sleeve is installed in each of the threaded holes, an external thread is arranged on the outer wall of the threaded sleeve, a second threaded hole is opened along the central axis of the threaded sleeve, the external thread is connected to the first threaded hole, and a thread fastening glue is filled in the gap at the connection between the external thread and the first threaded hole.

2. The fan-shaped block structure for a cold rolling uncoiler according to claim 1, characterized in that: The first threaded hole is a blind hole, and the second threaded hole is a through hole or a blind hole.

3. The fan-shaped block structure for a cold rolling uncoiler according to claim 2, characterized in that: The upper end of the second threaded hole is arranged in a chamfered structure.

4. The fan-shaped block structure for a cold rolling uncoiler according to claim 1, characterized in that: A chamfered structure is arranged around the outer edge of the upper port of the threaded sleeve.

5. The fan-shaped block structure for a cold rolling uncoiler according to claim 1, characterized in that: The specification of the first threaded hole is M40*3, and the specification of the external thread is M40*3.

6. The fan-shaped block structure for a cold rolling uncoiler according to claim 1, characterized in that: The number of the first threaded holes is 6, three of which are arranged on the upper and lower sides of the sector block body, and two of them are arranged symmetrically up and down about the midline of the sector block body.

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