Inner rotor permanent magnet fan anti-falling device

Abstract

The utility model discloses an inner rotor permanent magnet fan anti-falling device, which belongs to the technical field of permanent magnet fans and comprises a permanent magnet machine body, the upper surface of the permanent magnet machine body is fixedly connected with a supporting block, and the top end of an output shaft of the permanent magnet machine body is fixedly connected with a first rotating shaft. The inner rotor permanent magnet fan anti-falling device comprises a supporting block, the surface of the supporting block is fixedly connected with a bearing so that a first rotating shaft can be arranged in the bearing in a penetrating mode, the surface of the supporting block is sleeved with a protective shell, the protective shell is fixedly connected to the surface of the first rotating shaft, and the surface of the first rotating shaft is sleeved with a fixing sleeve. According to the fan anti-falling device, by arranging the supporting block, the protective shell and the supporting plate, in the process that a worker uses the device to carry out anti-falling on a fan, under cooperation of the supporting block, the protective shell and the supporting plate, fan blades on the broken surface of the first rotating shaft can be supported, and therefore the phenomenon that the fan blades fall is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet fans, and more specifically, to an anti-falling device for an inner rotor permanent magnet fan. Background Art

[0002] Permanent magnet fans are industrial fans powered by permanent magnet brushless motors. As the country increases its efforts in energy conservation and emission reduction, relevant industries have immediately adjusted their product structures in response to the national call. Products with energy-saving advantages such as permanent magnet brushless motors have stood out. Permanent magnet fans are low-cost, do not require a reduction gearbox, and the subsequent maintenance cost is almost zero. Permanent magnet synchronous motors can ensure a very high power factor within a higher operating range. However, the existing inner rotor permanent magnet fan has no anti-fall device. When the permanent magnet motor shaft breaks, the fan as a whole will fall, causing harm to people under the fan. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an anti-fall device for an inner rotor permanent magnet fan, which has the characteristic of preventing the fan blades from falling.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the utility model provides an inner rotor permanent magnet fan anti-falling device, comprising a permanent magnet machine body, a support block fixedly connected to the upper surface of the permanent magnet machine body, a first rotating shaft fixedly connected to the top end of the output shaft of the permanent magnet machine body, a bearing fixedly connected to the surface of the support block so that the first rotating shaft is arranged inside the bearing, a protective shell sleeved on the surface of the support block, the protective shell fixedly connected to the surface of the first rotating shaft, a fixing sleeve sleeved on the surface of the first rotating shaft, a support plate fixedly connected to the surface of the fixing sleeve, a fixing frame fixedly connected to the bottom end of the support plate, an adjusting chamber fixedly connected to the surface of the adjusting chamber, a bearing fixedly connected to the surface of the adjusting chamber so that a second rotating shaft is arranged inside the adjusting chamber, a first bevel gear fixedly connected to the bottom end of the second rotating shaft, a bearing fixedly connected to the inside of the adjusting chamber so that a third rotating shaft is arranged inside the adjusting chamber, a second bevel gear fixedly connected to the surface of the third rotating shaft, the first bevel gear and the second bevel gear meshing with each other, a threaded column fixedly connected to one end of the third rotating shaft, a threaded tube sleeved on the surface of the threaded column, a positioning groove provided on the surface of the fixing frame, the positioning groove matching the threaded tube.

[0007] When using the inner rotor permanent magnet fan anti-fall device of the present technical solution, the fan blades on the broken surface of the first rotating shaft can be supported by the cooperation of the support block, the protective shell and the support plate to prevent the fan blades from falling. By rotating the second rotating shaft with the knob, the third rotating shaft can drive the threaded tube on the surface of the threaded column to move to the inside of the positioning groove, thereby facilitating the installation of the support plate.

[0008] Furthermore, a first sliding groove is provided on the inner wall of the protective shell and the surface of the support block, and a ball is movably connected inside the first sliding groove. There are a plurality of balls, which are evenly arranged inside the first sliding groove.

[0009] Furthermore, there are two groups of threaded columns and threaded tubes, which are symmetrically arranged inside the adjustment chamber. The threads on the surfaces of the two groups of threaded columns are in opposite directions, and a knob is fixedly connected to the top of the second rotating shaft.

[0010] Furthermore, a slider is fixedly connected to the surface of the threaded tube, a second sliding groove is opened on the inner wall of the adjustment chamber, and the slider is movably connected inside the second sliding groove.

[0011] Furthermore, threaded holes are provided on the surfaces of the fixing sleeve and the first rotating shaft, fixing bolts are passed through the threaded holes, and the fixing sleeve and the first rotating shaft are fixedly connected by the fixing bolts.

[0012] Furthermore, fan blades are fixedly connected to the surface of the first rotating shaft. There are two groups of fan blades, which are symmetrically arranged on the surface of the first rotating shaft.

[0013] (3) Beneficial effects

[0014] In summary, the present invention has the following beneficial effects:

[0015] 1. The inner rotor permanent magnet fan anti-fall device is provided with a support block, a protective shell and a support plate. When the staff uses the device to prevent the fan from falling, the support block, the protective shell and the support plate cooperate to support the fan blades that are broken on the surface of the first rotating shaft, thereby preventing the fan blades from falling.

[0016] 2. The inner rotor permanent magnet fan anti-fall device is provided with a threaded column and a threaded tube. When the staff uses the device to prevent the fan from falling, the staff only needs to rotate the second rotating shaft through the knob, which can enable the third rotating shaft to drive the threaded tube on the surface of the threaded column to move to the inside of the positioning groove, thereby facilitating the staff to install the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0019] Figure 2 It is a schematic structural diagram of a three-dimensional cross-section of the utility model;

[0020] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0021] The symbols in the accompanying drawings are:

[0022] 1. Permanent magnet motor body; 2. Support block; 3. First rotating shaft; 4. Protective shell; 5. Ball bearing; 6. First slide groove; 7. Adjustment chamber; 8. Second rotating shaft; 9. First bevel gear; 10. Third rotating shaft; 11. Second bevel gear; 12. Threaded column; 13. Threaded tube; 14. Second slide groove; 15. Slider; 16. Knob; 17. Threaded hole; 18. Fixing sleeve; 19. Fixing bolt; 20. Support plate; 21. Fixing frame; 22. Positioning slot; 23. Fan blade. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the technical solutions in the specific implementation methods of the present invention are clearly and completely described below to further illustrate the present invention. Obviously, the specific implementation methods described are only part of the implementation methods of the present invention, rather than all styles.

[0024] Example:

[0025] The following is combined with Figure 1-3 The utility model is described in further detail.

[0026] See also Figure 1-3The utility model provides a technical solution: an inner rotor permanent magnet fan anti-falling device, comprising a permanent magnet machine body 1, a support block 2 fixedly connected to the upper surface of the permanent magnet machine body 1, by arranging the support block 2, the protective shell 4 and the support plate 20, under the cooperation of the support block 2, the protective shell 4 and the support plate 20, the fan blades 23 on the surface of the broken first rotating shaft 3 can be supported to prevent the fan blades 23 from falling. The top end of the output shaft of the permanent magnet machine body 1 is fixedly connected to the first rotating shaft 3, the surface of the support block 2 is fixedly connected to the bearing so that the first rotating shaft 3 is arranged inside the bearing, the surface of the support block 2 is sleeved with the protective shell 4, the protective shell 4 is fixedly connected to the surface of the first rotating shaft 3, the surface of the first rotating shaft 3 is sleeved with a fixed sleeve 18, the surface of the fixed sleeve 18 is fixedly connected to the support plate 20, the bottom end of the support plate 20 is fixedly connected to the fixed frame 21, the surface of the protective shell 4 The surface is fixedly connected with an adjusting chamber 7, and the surface of the adjusting chamber 7 is fixedly connected with a bearing so that a second rotating shaft 8 is passed through it. The bottom end of the second rotating shaft 8 is fixedly connected with a first bevel gear 9. The interior of the adjusting chamber 7 is fixedly connected with a bearing so that a third rotating shaft 10 is passed through it. The surface of the third rotating shaft 10 is fixedly connected with a second bevel gear 11. The first bevel gear 9 and the second bevel gear 11 are meshed with each other. One end of the third rotating shaft 10 is fixedly connected with a threaded column 12, and a threaded tube 13 is sleeved on the surface of the threaded column 12. By setting the threaded column 12 and the threaded tube 13, it is only necessary to rotate the second rotating shaft 8 by turning the knob 16, so that the third rotating shaft 10 can drive the threaded tube 13 on the surface of the threaded column 12 to move to the inside of the positioning groove 22, which is convenient for the staff to install the support plate 20. A positioning groove 22 is provided on the surface of the fixed frame 21, and the positioning groove 22 matches the threaded tube 13.

[0027] Specifically, the inner wall of the protective shell 4 and the surface of the support block 2 are both provided with a first slide groove 6 , and the interior of the first slide groove 6 is movably connected with a ball 5 . There are a plurality of balls 5 , and they are evenly arranged inside the first slide groove 6 .

[0028] Specifically, there are two groups of threaded columns 12 and threaded tubes 13, which are symmetrically arranged inside the adjustment chamber 7. The threads opened on the surfaces of the two groups of threaded columns 12 are in opposite directions, and the top end of the second rotating shaft 8 is fixedly connected to a knob 16.

[0029] Specifically, a slider 15 is fixedly connected to the surface of the threaded tube 13 , a second sliding groove 14 is opened on the inner wall of the adjustment chamber 7 , and the slider 15 is movably connected inside the second sliding groove 14 .

[0030] By adopting the above technical solution, with the cooperation of the second slide groove 14 and the slider 15, the threaded column 12 can drive the threaded tube 13 to move in a directional manner inside the adjustment chamber 7, thereby preventing the threaded tube 13 from deflecting during the movement.

[0031] Specifically, threaded holes 17 are formed on the surfaces of the fixing sleeve 18 and the first rotating shaft 3 . Fixing bolts 19 are passed through the threaded holes 17 . The fixing sleeve 18 and the first rotating shaft 3 are fixedly connected via the fixing bolts 19 .

[0032] Specifically, the surface of the first rotating shaft 3 is fixedly connected with fan blades 23 . There are two groups of fan blades 23 , which are symmetrically arranged on the surface of the first rotating shaft 3 .

[0033] The working principle of the present invention is as follows: when the present invention is used, the device is first moved to a suitable position, and then the integrity of the device is checked, and the permanent magnet machine body 1 is connected to the external power supply through a wire. When the staff uses the device to prevent the fan from falling, the staff first installs the fixing sleeve 18 on the surface of the first rotating shaft 3, and then the fixing sleeve 18 drives the fixing frame 21 to be sleeved on the surface of the adjusting chamber 7 through the support plate 20, and the fixing bolt 19 is passed through the inside of the threaded hole 17. Under the cooperation of the fixing bolt 19 and the threaded hole 17, the fixing sleeve 18 is installed and fixed on the surface of the first rotating shaft 3, and then the staff rotates the second rotating shaft 8 through the knob 16, and the second rotating shaft 8 drives the second bevel gear 11 to rotate through the first bevel gear 9, and then the second bevel gear 11 drives the threaded tube 13 on the surface of the threaded column 12 to move through the third rotating shaft 10, and with the cooperation of the slide groove and the slider 15, the threaded column 12 drives the threaded tube 13 to move in a directional manner inside the adjusting chamber 7. When the threaded tube 13 moves to the inside of the positioning groove 22, the staff stops turning the knob 16, thereby fixing the fixing frame 21 on the surface of the protective shell 4. When the first rotating shaft 3 breaks during use, with the cooperation of the support plate 20, the protective shell 4 and the support block 2, the fan blades 23 on the surface of the first rotating shaft 3 can be supported, thereby preventing the fan blades 23 from falling.

[0034] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An inner rotor permanent magnet fan anti-falling device, comprising a permanent magnet machine body (1), characterized in that: The upper surface of the permanent magnet machine body (1) is fixedly connected to a support block (2), the top end of the output shaft of the permanent magnet machine body (1) is fixedly connected to a first rotating shaft (3), the surface of the support block (2) is fixedly connected to a bearing so that the first rotating shaft (3) is arranged inside the bearing, the surface of the support block (2) is sleeved with a protective shell (4), the protective shell (4) is fixedly connected to the surface of the first rotating shaft (3), the surface of the first rotating shaft (3) is sleeved with a fixed sleeve (18), the surface of the fixed sleeve (18) is fixedly connected to a support plate (20), the bottom end of the support plate (20) is fixedly connected to a fixed frame (21), the surface of the protective shell (4) is fixedly connected to an adjustment chamber (7), the adjustment chamber (7) is fixedly connected to the bottom end of the support plate (20), and the adjustment chamber (7) is fixedly connected to the top end of the protective shell (4). The surface of the bin (7) is fixedly connected with a bearing so that a second rotating shaft (8) is passed through the inside thereof, the bottom end of the second rotating shaft (8) is fixedly connected with a first bevel gear (9), the inside of the regulating bin (7) is fixedly connected with a bearing so that a third rotating shaft (10) is passed through the inside thereof, the surface of the third rotating shaft (10) is fixedly connected with a second bevel gear (11), the first bevel gear (9) and the second bevel gear (11) are meshed, one end of the third rotating shaft (10) is fixedly connected with a threaded column (12), the surface of the threaded column (12) is sleeved with a threaded tube (13), a positioning groove (22) is provided on the surface of the fixing frame (21), and the positioning groove (22) and the threaded tube (13) match.

2. The inner rotor permanent magnet fan anti-falling device according to claim 1, characterized in that: The inner wall of the protective shell (4) and the surface of the support block (2) are both provided with a first slide groove (6), and a ball (5) is movably connected inside the first slide groove (6). There are a plurality of balls (5) that are evenly arranged inside the first slide groove (6).

3. The inner rotor permanent magnet fan anti-falling device according to claim 1, characterized in that: There are two groups of threaded columns (12) and threaded tubes (13), which are symmetrically arranged inside the adjustment chamber (7). The threads on the surfaces of the two groups of threaded columns (12) are in opposite directions. The top end of the second rotating shaft (8) is fixedly connected with a knob (16).

4. The inner rotor permanent magnet fan anti-falling device according to claim 1, characterized in that: A slider (15) is fixedly connected to the surface of the threaded tube (13), a second sliding groove (14) is opened on the inner wall of the regulating chamber (7), and the slider (15) is movably connected to the inside of the second sliding groove (14).

5. The inner rotor permanent magnet fan anti-falling device according to claim 1, characterized in that: The surfaces of the fixing sleeve (18) and the first rotating shaft (3) are both provided with threaded holes (17), the interior of the threaded holes (17) is penetrated by fixing bolts (19), and the fixing sleeve (18) and the first rotating shaft (3) are fixedly connected by the fixing bolts (19).

6. The inner rotor permanent magnet fan anti-falling device according to claim 1, characterized in that: The surface of the first rotating shaft (3) is fixedly connected with fan blades (23), and there are two groups of fan blades (23) that are symmetrically arranged on the surface of the first rotating shaft (3).

Images