Cold rolling oil mist fan shaft and fan

Abstract

The utility model relates to the technical field of aluminum processing calendaring, in particular to a cold rolling oil mist fan shaft and a fan, which comprise a shaft body formed by connecting a plurality of sections, the shaft body comprises a coupling section and a blade connecting section, and further comprises N bearing supporting sections positioned between the coupling section and the blade connecting section, and the diameter of each section of the shaft body on one side, far away from the blade connecting section, of any bearing supporting section is less than or equal to that of the bearing supporting section. By means of the scheme, the problem that in the prior art, the bearing cannot be detached from one side of the coupling section is solved, the blades and the air duct do not need to be detached when the bearing is detached, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum processing and rolling, in particular to a cold rolling oil mist fan shaft and a fan. Background Art

[0002] At present, during the cold rolling process of aluminum strips, rolling oil needs to be sprayed on the aluminum strips to play the role of lubrication, cooling and cleaning during the cold rolling process. However, during the spraying process, the rolling oil will splash into the air, and part of the sprayed rolling oil will form oil mist suspended in the air. Therefore, a fan is installed in the workshop to discharge the oil mist in the air of the workshop through the operation of the fan.

[0003] After the fan has been used for a period of time, the fan shaft needs to be repaired and maintained. Figure 1 As shown, the conventional fan shaft includes, from left to right, a coupling section 4, a first bearing support section 5, an intermediate section 6, a second bearing support section 7, a transition section 8 and a blade connection section 9. Among them, the first bearing 3 is installed on the first bearing support section 5, the second bearing 2 is connected to the second bearing support section 7, and the blade 1 is connected to the blade connection section 9. When the fan shaft needs to be maintained and serviced, the first bearing 3 and the second bearing 2 need to be disassembled, and the first bearing 3 can be disassembled to the left on the fan shaft, but the structure of the intermediate section 6 of the conventional fan shaft hinders the smooth replacement of the second bearing 2. The second bearing 2 cannot be disassembled from the coupling section 4 side, but can only be disassembled from the blade 1 side. Therefore, when disassembling the second bearing 2, the air duct and the blade 1 on the right side of the second bearing 2 need to be disassembled first, and then the second bearing 2 can be disassembled to the right. In this way, the disassembly of the second bearing 2 is troublesome, and the maintenance operation of the fan shaft is troublesome, which hinders normal production. Utility Model Content

[0004] The utility model aims to provide a cold rolling oil mist fan shaft and a fan, so as to solve the problem in the prior art that the bearing cannot be disassembled from one side of the coupling section.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a cold-rolled oil mist fan shaft, comprising a shaft body connected by multiple sections, the shaft body comprising a coupling section and a blade connection section, the shaft body also comprising N bearing support sections located between the coupling section and the blade connection section, N is a positive integer, and the diameter of each section of the shaft body on the side of any bearing support section away from the blade connection section is ≤ the diameter of the bearing support section.

[0006] The principle and advantage of this scheme are as follows: the bearing support section is used to install the bearing. The coupling section is used to connect with the coupling, and the blade connection section is used to connect with the blade. In this scheme, the diameter of each section of the shaft body of any bearing support section away from the blade connection section is ≤ the diameter of the bearing support section, which means that the diameter of each part of the shaft body of any bearing support section away from the blade connection section is ≤ the diameter of the bearing support section. In this way, the diameter of the inner ring of the bearing on the bearing support section is larger than the diameter of each part of the shaft body away from the blade connection section, and the situation that the diameter of the shaft body away from the blade connection section is larger than the diameter of the inner ring of the bearing will not occur. When the bearing is disassembled from the shaft body to the coupling section, each section of the shaft body will not hinder the smooth disassembly of the bearing from the shaft body, thereby solving the problem in the prior art that the bearing cannot be disassembled from the coupling section. There is no need to disassemble the blades and air ducts on the fan shaft. The operation is simple and convenient, which brings convenience to maintenance and saves more time for production.

[0007] Preferably, as an improvement, there is at least one bearing support segment: the diameter of the adjacent segment of the bearing support segment close to the blade connection segment is larger than the diameter of the bearing support segment.

[0008] Therefore, the bearing is installed on the bearing support section. Since the diameter of the adjacent section of the bearing support section close to the blade connecting section is larger than the diameter of the bearing support section, the side of the bearing facing the blade connecting section is blocked by the adjacent section of the bearing support section here, thereby sealing the oil in the bearing or the bearing seat.

[0009] Preferably, as an improvement, the shaft body further includes a transition section connected to the blade connecting section.

[0010] Preferably, as an improvement, the diameters of the bearing support sections increase successively from the coupling section to the blade connection section.

[0011] As a result, the diameter of each bearing support section becomes larger in sequence, so that the closer the part is to the blade, the stronger the shaft body is, so that the load can be increased, because the part of the shaft body close to the blade needs to bear a larger force, and after the strength of the shaft body is strengthened, it can bear the blade more stably. At the same time, after the diameter of the bearing support section becomes larger, the bearing model can also be increased, so that it is convenient to disassemble in the direction of the coupling section, which is conducive to improving the disassembly efficiency of the bearing, because the bearing model continues to increase from the coupling section and the blade connection section, and the bearing only needs to be separated from the corresponding bearing support section to easily remove the bearing from the entire shaft body. If the diameter of each bearing support section is the same, when disassembling in the direction of the coupling section, the distance the bearing moves on the shaft body is the sum of the lengths of all bearing support sections, which is not conducive to the rapid separation of the bearing from the shaft body, and the disassembly efficiency is slow.

[0012] Preferably, as an improvement, N is 2.

[0013] Preferably, as an improvement, from the coupling section to the blade connection section, the two bearing support sections are respectively a first bearing support section and a second bearing support section;

[0014] An intermediate section is connected between the first bearing support section and the second bearing support section, and the diameters of the first bearing support section, the intermediate section and the second bearing support section increase successively.

[0015] Therefore, compared with the prior art, the second bearing in this solution can be disassembled from one side of the coupling section without having to be disassembled on the blade side, which can greatly improve the disassembly efficiency of the second bearing, and the disassembly of the second bearing is simple and convenient. At the same time, the diameter of the second bearing support section is larger than the diameter of the first bearing support section, so that the model of the second bearing is larger than the model of the first bearing, thereby improving the load-bearing capacity of the second bearing support section, and the fan shaft runs more smoothly.

[0016] Preferably, as an improvement, a side of the second bearing support section away from the middle section is connected to an oil sealing section, and a diameter of the oil sealing section is larger than a diameter of the second bearing support section.

[0017] Therefore, compared with the prior art, the provision of the oil sealing section can seal the second bearing toward the blade side, thereby sealing the oil in the second bearing or the bearing seat.

[0018] Preferably, as an improvement, the diameter of the first bearing support section is 100 mm, and the diameter of the second bearing support section is 120 mm.

[0019] Therefore, compared with the prior art, in which the diameters of the first bearing support section and the second bearing support section are both 100 mm, the diameter of the second bearing support section in this solution is changed to 120 mm, and the model of the second bearing is also increased accordingly, thereby improving the load-bearing capacity of the second bearing and making the fan shaft run more smoothly.

[0020] Preferably, as an improvement, the diameter of the oil sealing section is 135 mm.

[0021] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the fan includes a cold-rolled oil mist fan shaft, a first bearing is installed on the first bearing support section, a second bearing is installed on the second bearing support section, the outer wall diameter of the first bearing is larger than the diameter of the middle section, and the outer wall diameter of the second bearing is larger than the diameter of the oil sealing section.

[0022] Therefore, when disassembling the first bearing and the second bearing, the hammer is used to knock the side of the bearing facing the blade, so that the first bearing and the second bearing are separated from the first bearing support section and the second bearing support section respectively. The diameter of the middle section is smaller than the outer wall diameter of the first bearing, and the diameter of the oil sealing section is smaller than the outer wall diameter of the second bearing. The middle section and the oil sealing section will not affect the hammer to knock the bearing towards the coupling section. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the cold rolling oil mist fan shaft in the prior art.

[0024] Figure 2 This is a schematic diagram of the structure of the improved cold rolling oil mist fan shaft.

[0025] Figure 3 This is a schematic diagram of the structure in which a knocking plate is provided on the second bearing support section in Example 2. DETAILED DESCRIPTION

[0026] The following is further described in detail through specific implementation methods:

[0027] The reference numerals in the drawings of the specification include: blade 1, second bearing 2, first bearing 3, coupling section 4, first bearing support section 5, middle section 6, second bearing support section 7, transition section 8, blade connection section 9, and oil sealing section 10.

[0028] Example 1

[0029] Basically as attached Figure 2 As shown: This embodiment discloses a cold-rolled oil mist fan shaft. The lines in bold in the figure are cold-rolled oil mist fan shafts, including a shaft body connected by multiple sections, the shaft body including a coupling section 4 and a blade connection section 9, the coupling section 4 is used to assemble the coupling, and the blade connection section 9 is used to install the blade. The shaft body also includes N bearing support sections located between the coupling section 4 and the blade connection section 9. In this embodiment, N is 2, from left to right, respectively, the first bearing support section 5 and the second bearing support section 7. Of course, in other embodiments, N can also be 3, 4 or 5, etc.

[0030] The shaft body in this embodiment also includes an intermediate section 6, an oil sealing section 10 and a transition section 8. The coupling section 4, the first bearing support section 5, the intermediate section 6, the second bearing support section 7, the oil sealing section 10, the transition section 8 and the blade connection section 9 are coaxially connected in sequence from left to right.

[0031] The diameter of each section of the shaft body on the side away from the blade connection section 9 of any bearing support section is ≤ the diameter of the bearing support section. Specifically, in the present embodiment, the diameter of the coupling section 4 on the left side of the first bearing support section 5 is smaller than the diameter of the first bearing support section 5, the diameter of the second bearing support section 7 is larger than the diameter of the middle section 6 on the left side of the second bearing support section 7, and the diameter of the second bearing support section 7 is also larger than the diameter of the first bearing support section 5 and the diameter of the coupling section 4. Of course, in other embodiments, the diameter of the coupling section 4 on the left side of the first bearing support section 5 may also be equal to the diameter of the first bearing support section 5, and the diameter of the second bearing support section 7 may also be equal to the diameter of the middle section 6 on the left side of the second bearing support section 7, the first bearing support section 5, and the coupling section 4.

[0032] In this way, the first bearing 3 and the second bearing 2 will not be hindered by the ends of the shaft sections when being removed from the shaft to the left, thereby achieving the first bearing 3 and the second bearing 2 being removed from the shaft to the left without having to be removed from the right end of the shaft, and without having to disassemble the blade 1 and the air duct on the right side of the second bearing 2, and the operation is simple and convenient.

[0033] There is at least one bearing support section: the diameter of the adjacent section of the bearing support section close to the blade connection section 9 is larger than the diameter of the bearing support section. Specifically in this embodiment, the middle section 6 is an adjacent section of the first bearing support section 5, and the diameter of the middle section 6 is larger than the diameter of the first bearing support section 5. The oil sealing section 10 is an adjacent section of the second bearing support section 7, and the diameter of the oil sealing section 10 is larger than the diameter of the second bearing support section 7. In this way, the first bearing 3 is installed in the first bearing support section 5, and the left side of the middle section 6 can be sealed against the right side of the first bearing 3 and the bearing seat of the first bearing 3, thereby reducing oil leakage in the bearing. The left end of the oil sealing section 10 can be sealed against the right side of the second bearing 2 and the bearing seat of the second bearing 2, thereby reducing oil leakage in the bearing.

[0034] In the present embodiment, during the process of removing the second bearing 2 to the left, a hammer is used to knock the second bearing 2 to the left, so that the second bearing 2 is separated from the second bearing support section 7. Since the diameter of the second bearing support section 7 is larger than the diameter of the middle section 6, after the second bearing 2 is separated from the second bearing support section 7, the inner wall of the inner ring of the second bearing 2 and the outer wall of the middle section 6 will not be in close contact, and there will be no friction between the two, so that it is easy to remove the second bearing 2 to the left. If the diameters of the middle section 6 and the second bearing support section 7 are equal, even after the second bearing 2 is separated from the second bearing support section 7, the inner wall of the inner ring of the second bearing 2 is still connected to the outer wall of the middle section 6, and the hammer is still needed to knock the second bearing 2 to the left to make the second bearing 2 move to the left on the middle section 6, which is more troublesome.

[0035] In this embodiment, the diameter of the first bearing support section 5 is 100 mm, and the diameter of the second bearing support section 7 is 120 mm. Figure 1 The diameter of the second bearing support section 7 is 100 mm. When the second bearing support section 7 becomes thicker, the structural strength of the entire shaft body will be enhanced, and the shaft body will be firm and stable. Because the right end of the shaft body is connected to the blade 1, the force it bears is greater than that of the left end. Therefore, after the strength of the right half of the shaft body is improved, the rotation stability of the shaft body is improved, and the service life is also increased. At the same time, the second bearing 2 on the second bearing support section 7 is also larger than the second bearing 2 in the prior art, so that it can bear a greater force and stably support the shaft body.

[0036] At the same time, when the size of the second bearing 2 becomes larger, it is also convenient for the hammer to strike it, thereby facilitating the disassembly of the second bearing 2.

[0037] Combination Figure 2 As shown, in this embodiment, the diameter of the oil sealing section 10 is 135 mm. After the second bearing 2 is installed on the second bearing support section 7, the outer wall of the second bearing 2 is located outside the outer wall of the oil sealing section 10, so that the oil sealing section 10 will not affect the hammer head from knocking the right side of the second bearing 2. Similarly, the diameter of the middle section 6 is 115 mm. After the first bearing 3 is installed on the first bearing support section 5, the outer wall of the first bearing 3 is located outside the middle section 6, and the middle section 6 will not affect the use of the hammer head to knock the first bearing 3.

[0038] The shaft body also includes a transition section 8 connected to the blade connection section 9, and the transition section 8 is located between the oil sealing section 10 and the blade connection section 9. The diameter of the transition section 8 is smaller than the diameter of the oil sealing section 10. By setting the transition section 8, on the one hand, it plays a role in the transition connection between the blade connection section 9 and the oil sealing section 10, so that the part on the right side of the shaft body oil sealing section 10 can be slowly thinned, avoiding the right end of the shaft body directly changing from the larger diameter oil sealing section 10 to the smaller diameter blade connection section 9, which makes the right end of the shaft body less stable and firm. On the other hand, if the transition section 8 is not provided, the blade connection section 9 is directly connected to the oil sealing section 10. Since the oil sealing section 10 is thicker, the radial space at the oil sealing section 10 is small, which is not conducive to the removal and installation of the blade 1. After the transition section 8 is provided, the diameter of the transition section 8 is smaller than the diameter of the oil sealing section 10, and the radial space occupied by the transition section 8 is small. The saved radial space is convenient for the removal and installation of the blade 1.

[0039] The material of the shaft in this embodiment is 40Cr.

[0040] This embodiment also discloses a fan, including the above-mentioned cold rolling oil mist fan shaft.

[0041] Example 2

[0042] This embodiment is further limited on the basis of the embodiment 1, and further comprises a knocking piece 11 sleeved on the first bearing support section 5 and the second bearing support section 7, the knocking piece 11 is circular, and a through hole is provided in the middle of the knocking piece 11. Figure 3 As shown, Figure 3 It is shown that the knocking piece 11 is located on the second bearing support section 7. In this embodiment, the knocking piece 11 on the first bearing support section 5 is close to the end of the middle section 6, the diameter of the knocking piece 11 on the first bearing support section 5 is larger than the diameter of the middle section 6, and the diameter of the knocking piece 11 on the first bearing support section 5 is not less than the outer wall diameter of the first bearing 3. The knocking piece 11 on the second bearing support section 7 is close to the end of the oil sealing section 10, the diameter of the knocking piece 11 on the second bearing support section 7 is larger than the diameter of the oil sealing section 10, and the diameter of the knocking piece 11 on the second bearing support section 7 is not less than the outer wall diameter of the second bearing 2.

[0043] Therefore, when the hammer is used to strike the first bearing 3 or the second bearing 2, the hammer strikes the striking plate 11 to the left, and the striking plate 11 pushes the first bearing 3 or the second bearing 2 to move to the left. The hammer will not directly act on the first bearing 3 or the second bearing 2, thereby reducing the damage to the first bearing 3 or the second bearing 2 caused by direct striking of the hammer.

[0044] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A cold rolling oil mist fan shaft, comprising a shaft body connected by multiple sections, the shaft body comprising a coupling section and a blade connection section, characterized in that: The shaft body also includes N bearing support segments located between the coupling segment and the blade connection segment, N is a positive integer, and the diameter of each shaft body segment on the side of any bearing support segment away from the blade connection segment is ≤ the diameter of the bearing support segment.

2. The cold rolling oil mist fan shaft according to claim 1, characterized in that: There is at least one bearing support section: the diameter of the adjacent section of the bearing support section close to the blade connection section is larger than the diameter of the bearing support section.

3. The cold rolling oil mist fan shaft according to claim 1, characterized in that: The shaft body also includes a transition section connected to the blade connecting section.

4. The cold rolling oil mist fan shaft according to claim 1, characterized in that: From the coupling section to the blade connection section, the diameters of the bearing support sections increase successively.

5. A cold rolling oil mist fan shaft according to any one of claims 1 to 4, characterized in that: N is 2.

6. The cold rolling oil mist fan shaft according to claim 5, characterized in that: From the coupling section to the blade connection section, the two bearing support sections are respectively a first bearing support section and a second bearing support section; An intermediate section is connected between the first bearing support section and the second bearing support section, and the diameters of the first bearing support section, the intermediate section and the second bearing support section increase successively.

7. The cold rolling oil mist fan shaft according to claim 6, characterized in that: An oil sealing section is connected to a side of the second bearing support section away from the middle section, and a diameter of the oil sealing section is greater than a diameter of the second bearing support section.

8. The cold rolling oil mist fan shaft according to claim 7, characterized in that: The diameter of the first bearing support section is 100 mm, and the diameter of the second bearing support section is 120 mm.

9. The cold rolling oil mist fan shaft according to claim 8, characterized in that: The diameter of the oil sealing section is 135 mm.

10. A fan, characterized in that: It includes a cold rolling oil mist blower shaft as described in claim 7, wherein a first bearing is installed on the first bearing support section, a second bearing is installed on the second bearing support section, the outer wall diameter of the first bearing is larger than the diameter of the middle section, and the outer wall diameter of the second bearing is larger than the diameter of the oil sealing section.

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