Dismounting method for furnace roller bearing

Abstract

The invention relates to the technical field of cold rolling equipment maintenance, in particular to a furnace roller bearing dismounting method which comprises the following steps: providing a bearing adapter sleeve nut dismounting tool and a bearing adapter sleeve loosening device; after the insertion block of the bearing adapter sleeve nut disassembling and assembling tool is inserted into the groove in the bearing adapter sleeve nut, the bearing adapter sleeve nut is disassembled from a bearing adapter sleeve by rotating the wrench. After the end, away from a second fixing plate, of a second sleeve of the bearing adapter sleeve loosening device is aligned with the end face of a bearing adapter sleeve and makes contact with the bearing adapter sleeve, a knocking tool is used for knocking the second fixing plate from the outer side of the second fixing plate so that the bearing adapter sleeve can be loosened; the bearing is detached from the furnace roller; according to the bearing adapter sleeve nut disassembling and assembling tool and the bearing adapter sleeve loosening device, the risks of damage to the nut and the adapter sleeve threads and damage to a shaft are reduced, the working efficiency and safety are improved, and the labor cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of cold rolling equipment maintenance, and in particular to a method for disassembling a furnace roller bearing. Background Art

[0002] The continuous annealing furnace is an important component of the cold rolling continuous annealing unit. There are more than 100 furnace rollers in the preheating section, heating section, soaking section, slow cooling section, rapid cooling section, aging section, and final cooling section, including steering rollers, tension meter rollers, and correction rollers. The furnace rollers are all designed with adapter sleeve bearings. The bearing adapter sleeve nuts on the transmission side and the operating side are all located deep in the bearing seat and cannot be directly disassembled and assembled using a crescent wrench.

[0003] During the regular replacement of furnace rollers, the bearings need to be disassembled. Before this, the bearing adapter sleeve needs to be loosened. The current conventional disassembly and assembly method of the bearing adapter sleeve is to first use a chisel to open the bearing adapter sleeve nut anti-loosening gasket, and then use a flat chisel to repeatedly hit the nut to rotate it for disassembly, and then continue to use the flat chisel to repeatedly hit the bearing adapter sleeve to loosen it. This method has a slow disassembly speed, and repeated hitting can easily cause deformation and damage to the nut and adapter sleeve threads, and easily damage the shaft, which is not conducive to the reinstallation of the adapter sleeve bearing. The repeated hitting process can also easily injure the hands. Summary of the Invention

[0004] In view of the above problems, the present invention discloses a method for disassembling a furnace roller bearing to solve the problems in the prior art that the furnace roller bearing is disassembled slowly and easily damages the shaft, making it difficult to reinstall.

[0005] A method for disassembling a furnace roller bearing comprises the following steps:

[0006] A bearing adapter sleeve nut disassembly and assembly tool and a bearing adapter sleeve loosening device are provided. The bearing adapter sleeve nut disassembly and assembly tool includes a first sleeve and a wrench. An insert block that matches the groove of the bearing adapter sleeve nut is fixed to the outer side of one end of the first sleeve. The other end of the first sleeve is fixedly connected to a first fixing plate. A wrench connection port is provided at the middle portion of the outer side of the first fixing plate. The wrench is detachably connected to the wrench connection port. The bearing adapter sleeve loosening device includes a second sleeve and a second fixing plate fixed to one end of the second sleeve.

[0007] After inserting the insert of the bearing adapter sleeve nut disassembly tool into the groove on the bearing adapter sleeve nut, the bearing adapter sleeve nut is removed from the bearing adapter sleeve by rotating the wrench;

[0008] After aligning the end of the second sleeve of the bearing adapter sleeve loosening device away from the second fixing plate with the end surface of the bearing adapter sleeve and making contact with the bearing adapter sleeve, using a knocking tool to knock the second fixing plate from the outside of the second fixing plate to loosen the bearing adapter sleeve;

[0009] The bearings are removed from the furnace rollers.

[0010] In some embodiments, the wrench is a ratchet wrench.

[0011] In some embodiments, four insert blocks are provided.

[0012] In some embodiments, the wrench connection opening is square.

[0013] In some embodiments, the insert is fixed to the outer wall of the first sleeve by welding.

[0014] In some embodiments, the inner diameter of the second sleeve is 0.8 to 1.2 mm larger than the inner diameter of the bearing.

[0015] In some embodiments, a handle is provided on the top of the second sleeve, and the handle is provided adjacent to the second fixing plate.

[0016] In some embodiments, the length of the second sleeve is 45-55 mm greater than the distance between the end of the bearing adapter sleeve and the end of the shaft.

[0017] Compared with the prior art, the above invention has one of the following advantages or beneficial effects:

[0018] The invention discloses a method for disassembling a furnace roller bearing. By using a bearing adapter sleeve nut disassembly and assembly tool and a bearing adapter sleeve loosening device, the risks of damage to the nut and adapter sleeve threads and damage to the shaft are reduced, work efficiency and safety are improved, and labor costs are saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention and its features, configurations, and advantages will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings. Like reference numerals indicate like layers throughout the drawings. The drawings are not necessarily drawn to scale, emphasis being placed on illustrating the subject matter of the present invention.

[0020] Figure 1 This is a flow chart of a method for disassembling a furnace roller bearing in an embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the structure of disassembling a bearing adapter sleeve nut using a bearing adapter sleeve nut disassembly tool according to an embodiment of the present invention;

[0022] Figure 3 This is a front view of a bearing adapter sleeve nut disassembly and assembly tool without a wrench in an embodiment of the present invention;

[0023] Figure 4 A side view of a bearing adapter sleeve nut disassembly and assembly tool without a wrench in an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the structure of loosening a bearing adapter sleeve using a bearing adapter sleeve loosening device in an embodiment of the present invention;

[0025] Figure 6 This is a front view of a bearing adapter sleeve loosening device according to an embodiment of the present invention;

[0026] Figure 7 A side view of a bearing adapter sleeve loosening device according to an embodiment of the present invention;

[0027] Among them: 1. First sleeve; 2. First fixed plate; 21. Wrench connection port; 3. Insert block; 4. Wrench; 5. Furnace roller; 6. Bearing seat; 7. Bearing; 8. Bearing adapter sleeve nut; 9. Bearing adapter sleeve; 10. Second sleeve; 11. Second fixed plate; 12. Handle. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0029] like Figure 1 As shown, this embodiment discloses a method for disassembling a furnace roller bearing, which is applicable to the case where all the furnace rollers 5 are designed with adapter sleeve bearings 7, and the adapter sleeve nuts 8 of the bearings on the transmission side and the operating side are all located deep in the bearing seat 6. Specifically, the method includes the following steps:

[0030] Step S1, providing a bearing adapter sleeve nut disassembly and assembly tool and a bearing adapter sleeve loosening device, the bearing adapter sleeve nut disassembly and assembly tool comprises a first sleeve 1 and a wrench 4, one end of the first sleeve 1 is welded and fixed to the outside with four plugs 3 that match the grooves of the bearing adapter sleeve nut 8, the other end of the first sleeve 1 is fixedly connected to a first fixing plate 2, the middle part of the outer side of the first fixing plate 2 is provided with a wrench connection port 21, the wrench 4 is detachably connected to the wrench connection port 21, and the wrench connection port 21 is square, as shown Figures 2-4 The bearing adapter sleeve loosening device includes a second sleeve 10 and a second fixing plate 11 fixed to one end of the second sleeve 10, such as Figures 5-7 The structure shown.

[0031] Step S2, continue to refer to Figure 2As shown, after the insert block 3 of the bearing adapter sleeve nut disassembly tool is inserted into the groove on the bearing adapter sleeve nut 8, the bearing adapter sleeve nut 8 is removed from the bearing 7 adapter sleeve by rotating the wrench 4.

[0032] Step S3, continue to refer to Figure 5 As shown, after the end of the second sleeve 10 of the bearing adapter sleeve loosening device away from the second fixing plate 11 is aligned with the end face of the bearing adapter sleeve and contacts the bearing adapter sleeve 9, a knocking tool is used to knock the second fixing plate 11 from the outside of the second fixing plate 11 to loosen the bearing adapter sleeve 9.

[0033] Step S4: remove the bearing 7 from the furnace roller 5.

[0034] In an embodiment of the present invention, the wrench 4 is a ratchet wrench.

[0035] In an embodiment of the present invention, the inner diameter of the second sleeve 10 is 0.8 to 1.2 mm (e.g., 0.8 mm, 1 mm, 1.1 mm, or 1.2 mm) larger than the inner diameter of the bearing 7, so that the end of the second sleeve 10 away from the second fixing plate 11 can be just aligned with the end face of the bearing adapter sleeve 9.

[0036] In this embodiment of the present invention, a handle 12 is provided on the top of the second sleeve 10, and is located adjacent to the second fixing plate 11 to facilitate movement of the bearing adapter sleeve loosening device by construction personnel. Furthermore, the length of the second sleeve 10 is 45 to 55 mm greater than the distance between the end of the bearing adapter sleeve 9 and the end of the shaft.

[0037] Those skilled in the art should understand that they can implement variations by combining the prior art with the above embodiments, which will not be described in detail here. Such variations do not affect the essence of the present invention and will not be described in detail here.

[0038] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-mentioned disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A method for disassembling a furnace roller bearing, characterized in that: The steps include: A bearing adapter sleeve nut disassembly and assembly tool and a bearing adapter sleeve loosening device are provided. The bearing adapter sleeve nut disassembly and assembly tool includes a first sleeve and a wrench. An insert block that matches the groove of the bearing adapter sleeve nut is fixed to the outer side of one end of the first sleeve. The other end of the first sleeve is fixedly connected to a first fixing plate. A wrench connection port is provided at the middle portion of the outer side of the first fixing plate. The wrench is detachably connected to the wrench connection port. The bearing adapter sleeve loosening device includes a second sleeve and a second fixing plate fixed to one end of the second sleeve. After inserting the insert of the bearing adapter sleeve nut disassembly tool into the groove on the bearing adapter sleeve nut, the bearing adapter sleeve nut is removed from the bearing adapter sleeve by rotating the wrench; After aligning the end of the second sleeve of the bearing adapter sleeve loosening device away from the second fixing plate with the end surface of the bearing adapter sleeve and making contact with the bearing adapter sleeve, using a knocking tool to knock the second fixing plate from the outside of the second fixing plate to loosen the bearing adapter sleeve; The bearings are removed from the furnace rollers.

2. The method for disassembling a furnace roller bearing according to claim 1, wherein: The wrench is a ratchet wrench.

3. The method for disassembling a furnace roller bearing according to claim 1, wherein: There are four inserting blocks.

4. The method for disassembling a furnace roller bearing according to claim 1, wherein: The wrench connecting port is square.

5. The method for disassembling a furnace roller bearing according to claim 1, wherein: The insert is fixed on the outer wall of the first sleeve by welding.

6. The method for disassembling a furnace roller bearing according to claim 1, wherein: The inner diameter of the second sleeve is 0.8 to 1.2 mm larger than the inner diameter of the bearing.

7. The method for disassembling a furnace roller bearing according to claim 1, wherein: A handle is provided on the top of the second sleeve, and the handle is provided adjacent to the second fixing plate.

8. The method for disassembling a furnace roller bearing according to claim 1, wherein: The length of the second sleeve is 45 to 55 mm greater than the distance between the end of the bearing adapter sleeve and the end of the shaft.

Images