Fan shaft structure

Abstract

The utility model discloses a fan shaft structure, and relates to the technical field of fan shafts. The fan shaft structure comprises a fan shaft body, a clamping mechanism is arranged outside the fan shaft body, and a locking mechanism is arranged on one side of the clamping mechanism. According to the fan shaft structure, the broken fan shaft body can be conveniently connected and repaired by arranging the round steel body, the round steel body can be conveniently fixed to the flange plate by arranging the conical surface and the threaded groove outside the round steel body, the fan shaft structure can be conveniently connected with the impeller through the flange plate, and at the moment, the fan shaft body can be repaired and used.

Description

Technical Field

[0001] The utility model belongs to the technical field of fan shafts, and in particular relates to a fan shaft structure. Background Art

[0002] A ship fan is a device specially used for ventilation of ships. Its function is to provide fresh air to the ship, remove dirty air, and maintain the air quality and environmental comfort in the cabin. The operation of a ship fan mostly relies on the motor to drive the fan shaft and fan impeller to rotate. The fan shaft will deform downward in the middle part under the gravity of the fan impeller and the stress generated by itself for a long time, and it is very easy to fatigue and break and cannot be used.

[0003] The prior art does not have a structure for quickly repairing a ship's fan shaft when in use, so that during the repair process of the prior art fan shaft, it is difficult to connect the two broken fan shafts and it is impossible to ensure coaxiality, which makes it difficult to repair the fan shaft. Based on the deficiencies of the prior art, the utility model designs a fan shaft structure. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model provides a fan shaft structure, which has the characteristics of rapid repair of the ship fan shaft.

[0005] To achieve the above object, the utility model provides the following technical solutions: a fan shaft structure, comprising a fan shaft body, a clamping mechanism is arranged outside the fan shaft body, and a locking mechanism is arranged on one side of the clamping mechanism;

[0006] The clamping mechanism comprises a round steel body and a clamping hole. The round steel body is arranged on the outer surface of the fan shaft body, and a clamping hole is opened on one side of the round steel body.

[0007] As a preferred technical solution for the fan shaft structure of the utility model, the clamping mechanism also includes a pressure relief hole and a welding ring. The pressure relief hole is opened on one side of the round steel body, and the welding ring is arranged on one side of the round steel body.

[0008] As a preferred technical solution for the fan shaft structure of the utility model, the clamping mechanism also includes a tapered surface and a threaded groove, the tapered surface is arranged on one side of the round steel body, and a threaded groove is opened on one side of the tapered surface.

[0009] As an optimal technical solution for the fan shaft structure of the utility model, the locking mechanism includes a flange, a threaded hole and a fixing hole. The flange is threadedly connected to one side of the round steel body, a threaded hole is provided on one side of the flange, and a fixing hole is provided on one side of the flange.

[0010] As a preferred technical solution for the fan shaft structure of the utility model, the pressure relief hole is opened inside the clamping hole, and the welding ring is arranged on one side of the conical surface.

[0011] As a preferred technical solution for the fan shaft structure of the utility model, the flange is threadedly connected to the outer surface of the thread groove, and the fixing hole is arranged on one side of the threaded hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When the utility model is in use, a round steel body is provided to facilitate the connection and repair of a broken fan shaft body. A conical surface and a threaded groove are provided on the outside of the round steel body to facilitate fixation with a flange, and the flange is used to facilitate connection with an impeller. At this time, the fan shaft body can be repaired and used. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the main structure of the fan shaft of the utility model;

[0016] Figure 2 This is a schematic diagram of the locking mechanism structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the clamping mechanism of the utility model.

[0018] In the figure: 1. Fan shaft body; 2. Clamping mechanism; 201. Round steel body; 202. Clamping hole; 203. Pressure relief hole; 204. Conical surface; 205. Threaded groove; 206. Welding ring; 3. Locking mechanism; 301. Flange; 302. Threaded hole one; 303. Threaded hole two; 304. Fixing bolt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example 1

[0021] See also Figure 1-3, the utility model provides the following technical solutions: a fan shaft structure, comprising a fan shaft body 1, a clamping mechanism 2 is arranged outside the fan shaft body 1, and a locking mechanism 3 is arranged on one side of the clamping mechanism 2;

[0022] The clamping mechanism 2 comprises a round steel body 201 and a clamping hole 202 . The round steel body 201 is arranged on the outer surface of the fan shaft body 1 , and a clamping hole 202 is opened on one side of the round steel body 201 .

[0023] The clamping mechanism 2 further includes a pressure relief hole 203 and a welding ring 206 . The pressure relief hole 203 is opened on one side of the round steel body 201 , and the welding ring 206 is arranged on one side of the round steel body 201 .

[0024] The clamping mechanism 2 further includes a tapered surface 204 and a thread groove 205 . The tapered surface 204 is arranged on one side of the round steel body 201 , and the thread groove 205 is formed on one side of the tapered surface 204 .

[0025] The locking mechanism 3 includes a flange 301, a threaded hole 1 302, a threaded hole 2 303, and a fixing bolt 304. The flange 301 is threadedly connected to one side of the round steel body 201. A threaded hole 1 302 is opened in the center of the flange 301, and a threaded hole 2 303 and a fixing bolt 304 are opened on one side of the flange 301.

[0026] The pressure relief hole 203 is opened inside the clamping hole 202 , and the welding ring 206 is arranged on one side of the tapered surface 204 .

[0027] The flange 301 is threadedly connected to the outer surface of the thread groove 205 , and the second threaded hole 303 is arranged on both sides of the center of the flange 301 .

[0028] It needs to be further explained that: by opening the pressure relief hole 203 on the round steel body 201 , it is convenient to release air and pressure, so that the broken fan shaft body 1 can be easily embedded in the interior of the round steel body 201 .

[0029] Working principle: When a fan shaft structure is used, first stop the fan and switch to the standby fan; disassemble the damaged fan housing and impeller accordingly, and remove the broken fan shaft body 1, fan impeller and other key components. Since the fracture surface of the fan shaft body 1 is uneven, it needs to be clamped on a lathe for turning and flattening, and the diameter of the fan shaft body 1 is measured to punch holes in the round steel body 201. The round steel body 201 connects the broken fan shaft body 1 and plays a role in increasing strength. When one end of the fan shaft body 1 is embedded in the clamping hole 202, due to the interference fit, the other end will be difficult to embed in the clamping hole 202, that is, the clamping hole 202 forms a closed space. At this time, not only the friction between the fan shaft body 1 and the round steel body 201 must be overcome, but also the pressure of the compressed air inside the clamping hole 202 must be overcome, so it is necessary to drill a pressure relief hole 203 in the middle of the round steel body 201 for deflation and pressure relief. Since the round steel body 201 and the fan shaft body 1 are interference fit and have torsional stress, in order to avoid separation during use, it is necessary to weld their mating surfaces together. This part is the welding ring 206, which makes them truly integrated.

[0030] After the fan shaft body 1 is clamped stably, the surface of the impeller contacting the round steel body 201 is finely machined to make it match the impeller conical surface. Half of the round steel body 201 needs to be turned into a conical surface 204, and a threaded groove 205 is turned at one-third of the conical surface 204, and a locking nut is processed. The locking nut is processed and manufactured with a flange 301. Since it cannot be tightened directly, a threaded hole 303 is opened on the flange 301, and a fixing bolt 304 is used to lock and press the fan impeller to the fan shaft body 1.

[0031] The reinforced fan shaft body 1 is clamped on the lathe for testing and adjustment. Observe whether the fan shaft body 1 rotates smoothly and whether there are any abnormalities in the impeller connection part. Perform the next test after installation. After installation, turn on the fan for observation. There is no abnormality in the operation. After a period of time, check again to find that there is no abnormality in the fan shaft body 1.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fan shaft structure, comprising a fan shaft body (1), characterized in that: A clamping mechanism (2) is arranged outside the fan shaft body (1), and a locking mechanism (3) is arranged on one side of the clamping mechanism (2); A clamping mechanism (2), the clamping mechanism (2) comprising a round steel body (201) and a clamping hole (202), the round steel body (201) being arranged on the outer surface of a fan shaft body (1), and a clamping hole (202) being provided on one side of the round steel body (201).

2. A fan shaft structure according to claim 1, characterized in that: The clamping mechanism (2) further comprises a pressure relief hole (203) and a welding ring (206); the pressure relief hole (203) is provided on one side of the round steel body (201); and the welding ring (206) is provided on one side of the round steel body (201).

3. A fan shaft structure according to claim 1, characterized in that: The clamping mechanism (2) further comprises a tapered surface (204) and a thread groove (205); the tapered surface (204) is arranged on one side of the round steel body (201); and the thread groove (205) is provided on one side of the tapered surface (204).

4. A fan shaft structure according to claim 1, characterized in that: The locking mechanism (3) comprises a flange (301), a first threaded hole (302), a second threaded hole (303) and a fixing bolt (304); the flange (301) is threadedly connected to one side of the round steel body (201); a first threaded hole (302) is provided on one side of the flange (301); a second threaded hole (303) and a fixing bolt (304) are provided on one side of the flange (301).

5. A fan shaft structure according to claim 2, characterized in that: The pressure relief hole (203) is opened inside the clamping hole (202), and the welding ring (206) is arranged on one side of the conical surface (204).

6. A fan shaft structure according to claim 4, characterized in that: The flange (301) is threadedly connected to the outer surface of the thread groove (205), the second threaded hole (303) is arranged on both sides of the center of the flange (301), and the fixing bolt (304) is screwed into the second threaded hole (303).

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