Folding fan

Abstract

The invention discloses a folding fan, which relates to the technical field of industrial large fans and comprises a fixing column, the upper end of the fixing column is connected with a mounting plate for fixing the fan on a plant, the lower end of the fixing column is connected with a fan motor, the fixing column is connected with a stator of the fan motor, and a rotor of the fan motor is rotatably connected to the stator. A plurality of connecting blocks are distributed on the rotor in a circumferential array mode, connecting plates are hinged to the connecting blocks, the connecting plates are connected with fan blades through fan blade angle adjusting structures, and a fan blade folding and unfolding structure is arranged on the rotor. The fan blades are arranged on the connecting plates, the fan blades are in a folded state during transportation, the space occupied by the whole fan is a slender cylindrical space, the fan can be transported without being disassembled, the fan blades are horizontal, namely the fan blades are in an unfolded state through the effect of the fan blade folding and unfolding structures on the adjusting plates on the fan blades during installation, the installation process is simplified, and the installation efficiency is improved. The fan blades do not need to be installed on site, and the risk that the fan blades fall off due to misoperation during installation is eradicated.

Description

Technical Field

[0001] The invention relates to the technical field of large industrial fans, in particular to a folding fan. Background Art

[0002] Some factories have large industrial fans installed on the roof of their factory buildings. The diameter of these large industrial fans usually ranges from 5m to 7m. Due to the large space they occupy after installation, they are usually disassembled during transportation, and the motor part is separated from the fan blade part to reduce transportation costs. After these parts are delivered to the factory building to be installed, installation workers are required to reassemble the fans at the installation site. Operational errors are inevitable during the disassembly and assembly process, resulting in the equipment being not securely installed, and the risk of fan blades falling off during later use.

[0003] Based on this, a folding fan is now provided, which can eliminate the disadvantages of the existing devices. Summary of the invention

[0004] The object of the present invention is to provide a foldable fan to solve the problem in the background art that operational errors are likely to occur during on-site installation of fan blades, resulting in loose installation of the fan blades.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A folding fan comprises a fixing column, wherein the upper end of the fixing column is connected to a mounting plate for fixing the fan on a factory building, the lower end of the fixing column is connected to a fan motor, the fan motor comprises two parts, a stator and a rotor, the fixing column is connected to the stator, the rotor is rotatably connected to the stator, a plurality of connecting blocks are arranged in a circumferential array on the rotor, a connecting plate is hinged on the connecting block, the connecting plate is connected to the fan blades via a fan blade angle adjustment structure, and a fan blade retraction structure is provided on the rotor.

[0007] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0008] In an optional solution: the fan blade angle adjustment structure includes a fixing rod, one end of the fixing rod is connected to the connecting plate, the other end of the fixing rod is hinged to the fan blade, a connecting sleeve is hinged on the connecting plate, a connecting rod is slidably provided in the connecting sleeve, one end of the connecting rod is hinged to the fan blade, an anti-detachment component is provided between the connecting sleeve and the connecting rod, and an adjustment component is provided between the connecting sleeve and the connecting rod.

[0009] In an optional scheme: the anti-slip assembly includes two anti-slip grooves symmetrically arranged on the connecting sleeve, and a first anti-slip block and a second anti-slip block are slidably arranged in the two anti-slip grooves respectively, an anti-slip socket hexagon bolt is passed through the connecting rod, and the anti-slip socket hexagon bolt passes through the first anti-slip block and the second anti-slip block, and an anti-slip nut is threadedly connected to the anti-slip socket hexagon bolt.

[0010] In an optional solution: the first anti-dropout block and the second anti-dropout block are both welded to the connecting rod.

[0011] In an optional solution: the adjustment component includes an adjustment screw rotatably arranged on a connecting sleeve, the connecting rod is provided with a slot, a plug plate is inserted in the slot, the plug plate is welded to the connecting sleeve, and the adjustment screw is threadedly connected to the plug plate.

[0012] In an optional solution: the fan blade retracting and extending structure includes a sliding groove arranged on a connecting block, a sliding frame is slidably provided in the sliding groove, a second clamping block is connected to the side of the lower surface of the sliding frame away from the stator, an adjusting plate is connected to the end of the fan blade close to the stator, a first clamping block is connected to the end of the adjusting plate close to the rotor, and an action component is provided on the rotor to drive the sliding frame to slide in the sliding groove.

[0013] In an optional solution: the adjustment plate is provided with a curved surface, and the second clamping block matches the curved surface.

[0014] In an optional solution: the action component includes a threaded sleeve coaxially arranged on the rotor, a pressure plate is sleeved on the threaded sleeve, the pressure plate is connected to the upper end of the sliding frame, a support spring is outerly arranged on the threaded sleeve, the support spring is located between the pressure plate and the rotor, and two circular nuts are threadedly connected to the threaded sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, the fan blades are arranged on the connecting plate. During transportation, the fan blades are in a folded state. The space occupied by the entire fan is an elongated cylindrical space, which can be transported without disassembling it. During installation, the fan blades are leveled, that is, in an unfolded state, through the action of the fan blade retracting and extending structure and the adjusting plate on the fan blades, thereby simplifying the installation process, eliminating the need to install the fan blades on site, and eliminating the risk of the fan blades falling off due to operational errors during installation.

[0017] 2. The present invention installs the fan blades on the connecting plate through the fan blade angle adjustment structure, which is convenient for adjusting the wind impact angle of the fan blades according to the actual situation of the factory when installing the fan, so as to optimize the use effect of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the unfolded state of the present invention.

[0019] Figure 2 for Figure 1 A partial enlarged view of middle A.

[0020] Figure 3 It is a schematic diagram of the connection block in the present invention.

[0021] Figure 4 for Figure 3 A partial enlarged view of B.

[0022] Figure 5 It is a schematic diagram of the folded state of the present invention.

[0023] Figure 6 It is a schematic diagram of the anti-slip component in the present invention.

[0024] Figure 7 It is a schematic diagram of the fan blade angle adjustment structure in the present invention.

[0025] Notes on figure numbers: 101, fixing column; 102, mounting plate; 103, stator; 104, rotor; 201, connecting block; 202, connecting plate; 203, fan blade; 204, adjusting plate; 205, first clamping block; 206, sliding groove; 207, sliding frame; 208, second clamping block; 209, arc surface; 301, threaded sleeve; 302, pressure plate; 303, support spring; 304, round nut; 401, fixing rod; 402, connecting sleeve; 403, connecting rod; 404, slot; 405, plug plate; 406, adjusting screw; 501, anti-slip groove; 502, first anti-slip block; 503, second anti-slip block; 504, anti-slip hexagon socket bolt; 505, anti-slip nut. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] In one embodiment, Figure 1-Figure 7 As shown, a folding fan includes a fixing column 101, the upper end of the fixing column 101 is connected to a mounting plate 102 for fixing the fan on a factory building, the lower end of the fixing column 101 is connected to a fan motor, the fan motor includes a stator 103 and a rotor 104, the fixing column 101 is connected to the stator 103, the rotor 104 is rotatably connected to the stator 103, a plurality of connecting blocks 201 are distributed in a circumferential array on the rotor 104, a connecting plate 202 is hinged on the connecting block 201, the connecting plate 202 is connected to the fan blades 203 through a fan blade angle adjustment structure, and a fan blade retraction structure is provided on the rotor 104.

[0028] In this embodiment, the connecting plate 202 is driven to rotate by the fan blade retracting and extending structure, so that the fan blades 203 connected to the connecting plate 202 are changed from a folded state to an unfolded state, thereby simplifying the installation process. There is no need to install the fan blades 203 on site, and the risk of the fan blades 203 falling off due to installation operation errors is eliminated. The angle of the fan blades 203 is adjusted by the fan blade angle adjustment structure, so that the wind impact angle of the fan blades 203 can be adjusted according to actual conditions.

[0029] In one embodiment, Figure 6 and Figure 7 As shown, the blade angle adjustment structure includes a fixing rod 401, one end of the fixing rod 401 is connected to the connecting plate 202, the other end of the fixing rod 401 is hinged to the blade 203, a connecting sleeve 402 is hinged on the connecting plate 202, a connecting rod 403 is slidably arranged in the connecting sleeve 402, one end of the connecting rod 403 is hinged to the blade 203, an anti-slip component is arranged between the connecting sleeve 402 and the connecting rod 403, an adjustment component is arranged between the connecting sleeve 402 and the connecting rod 403, the anti-slip component includes two anti-slip grooves 501 symmetrically arranged on the connecting sleeve 402, a first anti-slip block 502 and a second anti-slip block 503 are slidably arranged in the two anti-slip grooves 501, and an anti-slip socket hexagon bolt 504 is passed through the connecting rod 403 The anti-slip hexagon socket bolt 504 passes through the first anti-slip block 502 and the second anti-slip block 503, and the anti-slip hexagon socket bolt 504 is threadedly connected with an anti-slip nut 505. The adjustment component includes an adjusting screw 406 rotatably arranged on the connecting sleeve 402, and a slot 404 is provided on the connecting rod 403. A plug plate 405 is inserted in the slot 404, and the plug plate 405 is welded to the connecting sleeve 402. The adjusting screw 406 is threadedly connected to the plug plate 405. The adjusting screw 406 is rotated, and the adjusting screw 406 drives the plug plate 405 to move, and the plug plate 405 drives the connecting rod 403 to slide in the connecting sleeve 402, so that the fan blade 203 rotates around the hinge with the fixed rod 401 as the axis, so as to adjust the wind impact angle of the fan blade 203.

[0030] In one embodiment, Figure 6 As shown, the first anti-detachment block 502 and the second anti-detachment block 503 are both welded to the connecting rod 403, and cooperate with the anti-detachment hexagon socket bolt 504 and the anti-detachment nut 505 to provide double insurance to prevent the connecting sleeve 402 from detaching from the connecting rod 403.

[0031] In one embodiment, Figure 1-Figure 4As shown, the fan blade retracting and releasing structure includes a sliding groove 206 arranged on the connecting block 201, a sliding frame 207 is slidably arranged in the sliding groove 206, a second clamping block 208 is connected to the side of the lower surface of the sliding frame 207 away from the stator 103, an adjusting plate 204 is connected to the end of the fan blade 203 close to the stator 103, a first clamping block 205 is connected to the end of the adjusting plate 204 close to the rotor 104, an action component for driving the sliding frame 207 to slide in the sliding groove 206 is arranged on the rotor 104, an arc surface 209 is arranged on the adjusting plate 204, and the second clamping block 208 matches the arc surface 209, and the action component includes a threaded sleeve 301 coaxially arranged on the rotor 104, a pressure plate 302 is sleeved on the threaded sleeve 301, the pressure plate 302 is connected to the upper end of the sliding frame 207, a support spring 303 is arranged on the outer sleeve of the threaded sleeve 301, and the support spring 303 is located between the pressure plate 302 and the rotor 104, two circular nuts 304 are threadedly connected on the threaded sleeve 301. Before transportation, the circular nut 304 is located at the upper end of the threaded sleeve 301. At this time, due to the dead weight of the fan blades 203, the adjustment plate 204 enters the sliding groove 206. At this time, the fan blades 203 are all in a drooping state. At this time, the multiple fan blades 203 are wrapped together and fixed using a wrapping tape. At this time, the space occupied by the entire fan is an elongated cylindrical space, so that it can be transported without disassembling it. During installation, first fix the mounting plate 102 on the roof of the factory building, and then rotate the circular nut 304 to make the pressure plate 302 close to the rotor 104. The pressure plate 302 drives the sliding frame 207 to press down the adjustment plate 204, and the connecting plate 202 rotates to make the fan blades 203 in a horizontal state. The first clamping block 205 and the second clamping block 208 are mutually clamped to keep the structure stable. The two circular nuts 304 are interlocked to prevent loosening.

[0032] The above embodiment discloses a foldable fan. Before transportation, the circular nut 304 is located at the upper end of the threaded sleeve 301. At this time, due to the dead weight of the fan blades 203, the adjustment plate 204 enters the sliding groove 206. At this time, the fan blades 203 are all in a drooping state. At this time, the wrapping tape is used to wrap multiple fan blades 203 together for fixing. At this time, the space occupied by the entire fan is an elongated cylindrical space, so that it can be transported without disassembling it, simplifying the installation process, and there is no need to install the fan blades 203 on site, eliminating the risk of the fan blades 203 falling off due to installation operation errors. During installation, the mounting plate 102 is first fixed at the factory. On the roof, the circular nut 304 is then rotated to make the pressure plate 302 close to the rotor 104, and the pressure plate 302 drives the sliding frame 207 to press down the adjusting plate 204, and the connecting plate 202 rotates to make the fan blade 203 in a horizontal state, and the first clamping block 205 and the second clamping block 208 are mutually clamped to keep the structure stable. The two circular nuts 304 are interlocked to prevent loosening, and the adjusting screw 406 is rotated. The adjusting screw 406 drives the plug plate 405 to move, and the plug plate 405 drives the connecting rod 403 to slide in the connecting sleeve 402, so that the fan blade 203 rotates around the hinge with the fixed rod 401 as the axis, so as to adjust the wind impact angle of the fan blade 203.

[0033] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A folding fan, comprising a fixing column (101), wherein the upper end of the fixing column (101) is connected to a mounting plate (102) for fixing the fan on a factory building, and the lower end of the fixing column (101) is connected to a fan motor, wherein the fan motor comprises two parts, a stator (103) and a rotor (104), wherein the fixing column (101) is connected to the stator (103), and the rotor (104) is rotatably connected to the stator (103), wherein: A plurality of connection blocks (201) are arranged in a circumferential array on the rotor (104), a connection plate (202) is hinged on the connection block (201), the connection plate (202) is connected to the fan blade (203) via a fan blade angle adjustment structure, and a fan blade retracting and extending structure is provided on the rotor (104).

2. A folding fan according to claim 1, characterized in that: The blade angle adjustment structure comprises a fixing rod (401), one end of the fixing rod (401) is connected to a connecting plate (202), the other end of the fixing rod (401) is hinged to a blade (203), a connecting sleeve (402) is hinged to the connecting plate (202), a connecting rod (403) is slidably arranged in the connecting sleeve (402), one end of the connecting rod (403) is hinged to the blade (203), an anti-slip assembly is arranged between the connecting sleeve (402) and the connecting rod (403), and an adjustment assembly is arranged between the connecting sleeve (402) and the connecting rod (403).

3. A folding fan according to claim 2, characterized in that: The anti-slip assembly comprises two anti-slip grooves (501) symmetrically arranged on the connecting sleeve (402), a first anti-slip block (502) and a second anti-slip block (503) being slidably arranged in the two anti-slip grooves (501), an anti-slip socket hexagonal bolt (504) being passed through the connecting rod (403), the anti-slip socket hexagonal bolt (504) passing through the first anti-slip block (502) and the second anti-slip block (503), and an anti-slip nut (505) being threadedly connected to the anti-slip socket hexagonal bolt (504).

4. A folding fan according to claim 3, characterized in that: The first anti-slip block (502) and the second anti-slip block (503) are both welded to the connecting rod (403).

5. A folding fan according to claim 2, characterized in that: The adjustment assembly comprises an adjustment screw (406) rotatably arranged on a connecting sleeve (402); a slot (404) is provided on the connecting rod (403); a plug plate (405) is inserted into the slot (404); the plug plate (405) is welded to the connecting sleeve (402); and the adjustment screw (406) is threadedly connected to the plug plate (405).

6. A folding fan according to claim 1, characterized in that: The fan blade retracting and extending structure comprises a sliding groove (206) arranged on a connecting block (201), a sliding frame (207) being slidably arranged in the sliding groove (206), a second clamping block (208) being connected to a side of a lower surface of the sliding frame (207) away from the stator (103), an adjusting plate (204) being connected to an end of the fan blade (203) close to the stator (103), a first clamping block (205) being connected to an end of the adjusting plate (204) close to the rotor (104), and an action component for driving the sliding frame (207) to slide in the sliding groove (206) being arranged on the rotor (104).

7. A folding fan according to claim 6, characterized in that: The adjustment plate (204) is provided with an arc surface (209), and the second clamping block (208) matches the arc surface (209).

8. A folding fan according to claim 6, characterized in that: The action assembly comprises a threaded sleeve (301) coaxially arranged on the rotor (104); a pressure plate (302) is sleeved on the threaded sleeve (301); the pressure plate (302) is connected to the upper end of the sliding frame (207); a support spring (303) is sleeved on the threaded sleeve (301); the support spring (303) is located between the pressure plate (302) and the rotor (104); and two circular nuts (304) are threadedly connected on the threaded sleeve (301).

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