A blade de-icer for high-cold regions

Abstract

The application belongs to the technical field of wind power deicing, and discloses a high-cold region blade deicer, which comprises a fan, a support mechanism and a lifting mechanism, further comprises: a connecting assembly installed below the fixed ring frame; a nozzle mechanism annularly arranged on the bottom of the connecting assembly; a pump liquid mechanism; a gear motor arranged on the fixed ring frame and used for driving the connecting assembly to rotate the nozzle mechanism. The above scheme drives the support mechanism to ascend to the topmost part through the lifting mechanism and the winch, then slowly lowers the support mechanism, simultaneously drives the connecting assembly to rotate through the gear motor, and drives the pump body to pump the deicing agent into the pipeline through the pump liquid mechanism. After the deicing agent enters the pipeline, the inner sleeve pushes the elastic piece to be compressed and drives the nozzle body to move towards the blade, meanwhile, the deicing agent also enters the nozzle body through the through groove and is sprayed out through the nozzle body to rotate around the blade to ensure that the deicing agent covers the blade, thereby improving the deicing efficiency.

Description

Technical Field

[0001] This invention belongs to the field of wind power de-icing technology, specifically a blade de-icer for high-altitude and cold regions. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into electrical energy. In autumn and winter, when the temperature drops, or in some high-altitude, high-humidity, and low-temperature areas, as well as in areas affected by factors such as temperature differences between day and night, changes in the water vapor content in the air, and persistently low temperatures, the surface of the wind turbine blades is prone to icing, which significantly reduces the power generation efficiency of the wind turbine.

[0003] Typically, heating wires are embedded during the manufacturing process of wind turbine blades. When icing occurs on the blade, the heating wires are activated to de-ic the blade. For wind turbine blades without embedded heating wires, operators usually use drones to spray de-icing agents onto the blade surface, or apply a special coating to prevent icing. However, pre-embedded heating wires are susceptible to damage from lightning strikes (and cannot be easily replaced), and consume a lot of electricity. Drone-based de-icing agents are small in volume and slow in efficiency. Special coatings have a short lifespan, are prone to peeling, and are only effective for preventing icing in light freezing conditions; their effectiveness is minimal during severe freezing. Therefore, to address these issues, a blade de-icing device for high-altitude and cold regions is proposed. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a blade de-icing device for high-altitude and cold regions, which solves the problems of low de-icing efficiency and easy damage in existing methods.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a blade de-icing device for high-altitude and cold regions, comprising a fan, a support mechanism, and a lifting mechanism. The lifting mechanism is mounted on the fan to lift the support mechanism. The support mechanism includes a fixed ring frame and a cross frame symmetrically fixed thereon. A perforated guide rod is fixedly connected to the cross frame, and a V-shaped frame is fixedly connected to one end of the perforated guide rod. The V-shaped frame is provided with a plurality of rollers that can contact the column of the fan. The device further includes: a connecting assembly mounted below the fixed ring frame; a nozzle mechanism, whose annular array is fixedly mounted at the bottom of the connecting assembly; a pumping mechanism mounted at the bottom of the connecting assembly to pump de-icing agent into the nozzle mechanism; and a gear motor mounted on the fixed ring frame to drive the connecting assembly to rotate the nozzle mechanism.

[0006] The nozzle mechanism includes a hanger installed below the connecting assembly. A nozzle body is movably sleeved on the hanger. An inner sleeve is fixedly connected inside the nozzle body. A through groove is opened on the inner sleeve. A pipe is movably connected inside the inner sleeve. One end of the pipe extends to the outside of the nozzle body and is fixedly connected to the hanger. The end of the pipe is also connected to the output end of the pump mechanism. An elastic member is sleeved on the outer periphery of the nozzle body between the nozzle body and the hanger. A push rod assembly is also fixedly connected to the nozzle body.

[0007] Preferably, both the fixed ring frame and the cross frame are provided with hanging ears;

[0008] The lifting mechanism includes a sling, a bracket is mounted on the top shaft of the fan, a guide wheel is hinged to the bottom of the bracket, the sling is wound around the guide wheel, one end of the sling is mounted on a lug, and the other end is connected to a winch on the ground.

[0009] Preferably, the connecting assembly includes a bearing component, a rotating ring frame, and a gear ring, wherein the inner ring portion of the bearing component is fixedly connected to the fixed ring frame, the outer ring portion of the bearing component is fixedly connected to the rotating ring frame, and the gear ring is fixedly mounted on the rotating ring frame and is connected to the output end of the gear motor for transmission.

[0010] The nozzle mechanism is installed at the bottom of the rotating ring frame.

[0011] Preferably, the pump mechanism includes a circular ring, a sealing ring, and a hose. The circular ring is fixedly installed at the bottom of the fixed ring frame, the inner ring of the circular ring is movably installed with the sealing ring, and the outer ring of the circular ring is fixedly connected with the hose.

[0012] One end of the pipe passes through a sealing ring and connects to a circular ring, while the bottom end of the hose connects to the pump body.

[0013] Preferably, the top rod assembly includes an outer rod fixed to the nozzle body, a piston rod movably sleeved inside the outer rod, one end of the piston rod being fixedly connected to the hanger, an air passage being fixedly connected to the outer rod, and the outer rod cavity being connected to the outside through the air passage.

[0014] Preferably, the push rod assembly further includes a one-way valve disc disposed in the air passage, through which external gas can enter the outer rod in one direction; the one-way valve disc has a microhole in the middle, which is used to discharge the gas in the outer rod to the outside through the microhole.

[0015] Preferably, the support mechanism is further provided with a sub-frame assembly for increasing the support stability of the support mechanism and the fan column.

[0016] Preferably, the subframe assembly includes a slide rod, with both ends of the slide rod movably sleeved on two guide rods with holes, a Y-shaped connecting rod hinged to the bottom of the slide rod, guide rollers sleeved on the bifurcated portions of the Y-shaped connecting rod, a telescopic rod installed in the middle of the V-shaped frame, the bottom end of the telescopic rod hinged to the bifurcated intersection of the Y-shaped connecting rod, and pins symmetrically arranged on the slide rod;

[0017] The guide rod has an insertion hole, and when the slide rod slides above the insertion hole, one end of it can be inserted into the insertion hole due to gravity.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The above solution uses a lifting mechanism and a winch to move the support mechanism to the top and then slowly lowers it. At the same time, a gear motor drives the connecting components to rotate, and the pump body pumps the de-icing agent into the pipeline through the pumping mechanism. After the de-icing agent enters the pipeline, it pushes the inner sleeve, compresses the elastic element, and moves the nozzle body toward the blade. At the same time, the de-icing agent also enters the nozzle body through the through groove and is sprayed out by rotating the nozzle body around the blade to ensure that the de-icing agent covers the blade, thereby improving the de-icing efficiency.

[0020] The above solution allows external gas to enter the outer rod through a one-way valve when the outer rod moves. When the end of the outer rod rotates to the thin part of the blade, the pump mechanism pumps de-icing agent into the inner sleeve through the pipeline, causing the inner sleeve and the nozzle body to tend to move towards the blade. At this time, the gas inside the outer rod will be discharged through the micro-hole on the one-way valve, thereby reducing the moving speed of the push rod assembly. This avoids the situation where the nozzle body moves and elongates rapidly towards the blade, causing the rod part of the push rod assembly to interfere with the blade and damage it.

[0021] The above solution works by having the guide roller move vertically under its own weight and the limiting force of the telescopic rod when the support mechanism is lifted by the lifting mechanism. At the same time, the Y-shaped connecting rod will also drive the sliding rod to slide along the hole guide rod. When the sliding rod abuts against the bend of the V-shaped frame, the pin will be inserted into the insertion hole under its own weight. At this time, the guide roller, through the Y-shaped connecting rod and the sliding rod, supports the hole guide rod, increasing the stability of the V-shaped frame in contact with the fan column through the roller. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a front view of the present invention;

[0024] Figure 3 This is a schematic diagram of the cooperative structure of the nozzle mechanism and the pump mechanism of the present invention;

[0025] Figure 4This is a split view of the connecting component of the present invention;

[0026] Figure 5 This is a partial cross-sectional view of the nozzle mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the inner sleeve of the present invention;

[0028] Figure 7 This is a partial cross-sectional plan view of the front of the present invention;

[0029] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0030] Figure 9 for Figure 8 Enlarged view of point B in the middle;

[0031] Figure 10 This is a schematic diagram of the support mechanism of the present invention;

[0032] Figure 11 This is a schematic diagram of the Y-shaped connecting rod of the present invention.

[0033] In the diagram: 1. Fan; 2. Support mechanism; 21. Fixed ring frame; 211. Hanging lug; 22. Cross frame; 23. Hole guide rod; 231. Insertion hole; 24. V-shaped frame; 25. Roller; 3. Connecting assembly; 31. Bearing component; 32. Moving ring frame; 33. Gear ring; 4. Nozzle mechanism; 41. Hanger; 42. Nozzle body; 43. Inner sleeve; 44. Through groove; 45. Pipe; 46. Elastic component; 7. Top rod assembly; 471. Outer rod; 472. Piston rod; 473. One-way valve disc; 474. Air passage; 5. Pump mechanism; 51. Circular ring; 52. Sealing ring; 53. Hose; 6. Lifting mechanism; 61. Sling; 62. Hanger; 63. Guide wheel; 7. Subframe assembly; 71. Slide rod; 72. Y-shaped connecting rod; 73. Guide roller; 74. Telescopic rod; 75. Pin; 8. Gear motor. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1 to 11As shown, the present invention provides a blade de-icing device for high-altitude and cold regions, including a fan 1, a support mechanism 2, and a lifting mechanism 6. The lifting mechanism 6 is installed on the fan 1 to lift the support mechanism 2. The support mechanism 2 includes a fixed ring frame 21 and a cross frame 22 symmetrically fixed thereon. A perforated guide rod 23 is fixedly connected to the cross frame 22. A V-shaped frame 24 is fixedly connected to one end of the perforated guide rod 23. The V-shaped frame 24 is provided with a plurality of rollers 25 that can contact the column of the fan 1. The device also includes: a connecting assembly 3, which is installed below the fixed ring frame 21; a nozzle mechanism 4, which is fixedly installed in a ring array at the bottom of the connecting assembly 3; a pumping mechanism 5, which is installed at the bottom of the connecting assembly 3 to pump de-icing agent into the nozzle mechanism 4; and a gear motor 8, which is disposed on the fixed ring frame 21 to drive the connecting assembly 3 to rotate.

[0036] The nozzle mechanism 4 includes a hanger 41 installed below the connecting assembly 3. A nozzle body 42 is movably sleeved on the hanger 41. An inner sleeve 43 is fixedly connected inside the nozzle body 42. A through groove 44 is opened on the inner sleeve 43. A pipe 45 is movably connected inside the inner sleeve 43. One end of the pipe 45 extends to the outside of the nozzle body 42 and is fixedly connected to the hanger 41. The end of the pipe 45 is also connected to the output end of the pump mechanism 5. An elastic member 46 is sleeved on the outer periphery of the nozzle body 42 and located between the nozzle body 42 and the hanger 41. A top rod assembly 47 is also fixedly connected to the nozzle body 42.

[0037] Both the fixed ring frame 21 and the cross frame 22 are provided with hanging ears 211; the lifting mechanism 6 includes a sling 61, a bracket 62 is installed on the top shaft of the fan 1, a guide wheel 63 is hinged to the bottom of the bracket 62, the sling 61 is wound around the guide wheel 63, one end of the sling 61 is installed on the hanging ear 211, and the other end is connected to a winch on the ground; the connecting assembly 3 includes a bearing 31, a moving ring frame 32 and a gear ring 33, wherein the inner ring of the bearing 31 is fixedly connected to the fixed ring frame 21, the outer ring of the bearing 31 is fixedly connected to the moving ring frame 32, and the gear ring 33 is fixedly installed on the moving ring frame 32 and is drivenly connected to the output end of the gear motor 8; the nozzle mechanism 4 is installed at the bottom of the moving ring frame 32;

[0038] Using the above scheme, the fan 1 is operated to keep one of the blades in a vertically hanging state. Then, the bracket 62 and guide wheel 63 are installed on the top shaft of the fan 1. One end of the sling 61 is installed on the lug 211 and the other end is connected to the winch. The V-shaped frame 24 is supported on the column of the fan 1 by the roller 25. The winch is operated to wind up the sling 61 so that the central hole of the support mechanism 2 fits around the outer circumference of the blade. Then, the support mechanism 2 is driven to the top and then slowly lowered. At the same time, the gear motor 8 drives the connecting component 3 to rotate and the pump body is operated to pump the de-icing agent into the pipe 45 through the pumping mechanism 5. After the de-icing agent enters the pipe 45, it pushes the inner sleeve 43 to compress the elastic element 46 and drive the nozzle body 42 to move towards the blade. At the same time, the de-icing agent will also enter the nozzle body 42 through the through groove 44 and spray out by rotating around the blade to ensure that the de-icing agent covers the blade.

[0039] It is worth noting that when the nozzle body 42 moves toward the blade, it also drives the push rod assembly 47 to move toward the blade and come into contact with the blade to avoid the output end of the nozzle body 42 being too close to the blade and thus reducing the output range of the nozzle body 42.

[0040] like Figures 1-4 and Figures 8-10 As shown, the pump mechanism 5 includes a circular ring 51, a sealing ring 52, and a hose 53. The circular ring 51 is fixedly installed at the bottom of the fixed ring frame 21. The sealing ring 52 is movably installed on the inner ring of the circular ring 51, and the hose 53 is fixedly connected to the outer ring of the circular ring 51.

[0041] One end of pipe 45 passes through sealing ring 52 and connects to ring 51, and the bottom end of hose 53 connects to pump body;

[0042] With the above solution, when the nozzle mechanism 4 rotates with the connecting component 3, the sealing ring 52 will rotate with the nozzle mechanism 4, thereby ensuring that the hose 53 can stably pump de-icing agent into the ring component 51.

[0043] like Figure 5 , Figure 8 and Figure 9 As shown, the top rod assembly 47 includes an outer rod 471 fixedly connected to the nozzle body 42, a piston rod 472 movably sleeved inside the outer rod 471, one end of the piston rod 472 being fixedly connected to the hanger 41, and an air passage 474 fixedly connected to the outer rod 471, the cavity of the outer rod 471 being connected to the outside through the air passage 474.

[0044] The push rod assembly 47 also includes a one-way valve 473 disposed in the air passage 474, through which external gas can enter the outer rod 471 in one direction; the one-way valve 473 has a micro hole in the middle, which is used to discharge the gas in the outer rod 471 to the outside through the micro hole.

[0045] By adopting the above scheme, when the outer rod 471 moves, the volume of the internal cavity of the outer rod 471 will increase, allowing external gas to enter the outer rod 471 through the one-way valve 473. When the end of the outer rod 471 rotates to the thin part of the blade, the pumping mechanism 5 pumps de-icing agent into the inner sleeve 43 through the pipe 45, causing the inner sleeve 43 and the nozzle body 42 to tend to move towards the blade. At this time, the gas inside the outer rod 471 will be discharged through the micro-hole on the one-way valve 473, thereby reducing the moving speed of the push rod assembly 47. This avoids the situation where the nozzle body 42 moves and elongates rapidly towards the blade, causing interference between the push rod assembly 47 and the blade, resulting in blade damage.

[0046] like Figures 2-4 , Figure 7 , Figure 10 and Figure 11 As shown, the support mechanism 2 is also equipped with a sub-frame assembly 7 for increasing the support stability of the support mechanism 2 and the column of the fan 1;

[0047] The subframe assembly 7 includes a slide rod 71, with both ends of the slide rod 71 movably sleeved on two guide rods 23. A Y-shaped connecting rod 72 is hinged to the bottom of the slide rod 71. Guide rollers 73 are sleeved on the bifurcation of the Y-shaped connecting rod 72. A telescopic rod 74 is installed in the middle of the V-shaped frame 24. The bottom end of the telescopic rod 74 is hinged at the intersection of the bifurcation of the Y-shaped connecting rod 72. Pins 75 are symmetrically arranged on the slide rod 71.

[0048] The guide rod 23 has an insertion hole 231. When the slide rod 71 slides above the insertion hole 231, one end of it can be inserted into the insertion hole 231 due to gravity.

[0049] Using the above scheme, when the support mechanism 2 is lifted by the lifting mechanism 6, the guide roller 73 will move vertically under its own weight and the limitation of the telescopic rod 74. At the same time, the Y-shaped connecting rod 72 will also drive the sliding rod 71 to slide along the hole guide rod 23. When the sliding rod 71 abuts against the bend of the V-shaped frame 24, the pin 75 will be subjected to its own weight, causing one end to be inserted into the insertion hole 231. At this time, the guide roller 73, through the Y-shaped connecting rod 72 and the sliding rod 71, supports the hole guide rod 23, increasing the stability of the V-shaped frame 24 in contact with the fan 1 column through the roller 25.

[0050] Working principle and usage process of this invention:

[0051] The operator first runs the fan 1 to keep one of the blades vertically hanging down. Then, the bracket 62 and guide wheel 63 are installed on the top shaft of the fan 1. One end of the sling 61 is installed on the lug 211 and the other end is connected to the winch. The V-frame 24 is supported on the column of the fan 1 by the roller 25. The winch is run to wind up the sling 61 so that the central hole of the support mechanism 2 fits around the outer circumference of the blade. Then, the support mechanism 2 is driven up to the top and then slowly lowered. At the same time, the gear motor 8 drives the connecting assembly 3 to rotate and the pump body is run to pump the de-icing agent into the pipe 45 through the pumping mechanism 5. After the de-icing agent enters the pipe 45, it pushes the inner sleeve 43 to compress the elastic element 46 and drive the nozzle body 42 to move toward the blade. At the same time, the de-icing agent will also enter the nozzle body 42 through the through groove 44 and spray out by rotating around the blade to ensure that the de-icing agent covers the blade.

[0052] When the nozzle body 42 moves toward the blade, it will also drive the push rod assembly 47 to move toward the blade and abut against the blade to avoid the output end of the nozzle body 42 being too close to the blade and thus reducing the output range of the nozzle body 42.

[0053] When the outer rod 471 moves, the volume of the internal cavity of the outer rod 471 increases, allowing external gas to enter the outer rod 471 through the one-way valve 473. When the end of the outer rod 471 rotates to the thin part of the blade, the pump mechanism 5 pumps de-icing agent into the inner sleeve 43 through the pipe 45, causing the inner sleeve 43 and the nozzle body 42 to tend to move towards the blade. At this time, the gas inside the outer rod 471 will be discharged through the micro-hole on the one-way valve 473, thereby reducing the moving speed of the top rod assembly 47. This avoids the situation where the nozzle body 42 moves and elongates rapidly towards the blade, causing interference between the top rod assembly 47 and the blade, which would lead to blade damage.

[0054] When the support mechanism 2 is lifted by the lifting mechanism 6, the guide roller 73 will move vertically under its own weight and the limitation of the telescopic rod 74. At the same time, the Y-shaped connecting rod 72 will also drive the sliding rod 71 to slide along the hole guide rod 23. When the sliding rod 71 abuts against the bend of the V-shaped frame 24, the pin 75 will be driven by its own weight to insert one end into the insertion hole 231. At this time, the guide roller 73, through the Y-shaped connecting rod 72 and the sliding rod 71, supports the hole guide rod 23, increasing the stability of the V-shaped frame 24 in contact with the fan 1 column through the roller 25.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blade de-icing device for high-altitude and cold regions, comprising a fan (1), a support mechanism (2), and a lifting mechanism (6), wherein the lifting mechanism (6) is mounted on the fan (1) for lifting the support mechanism (2), the support mechanism (2) comprises a fixed ring frame (21) and a cross frame (22) symmetrically fixed thereon, a perforated guide rod (23) is fixedly connected to the cross frame (22), one end of the perforated guide rod (23) is fixedly connected to a V-shaped frame (24), and the V-shaped frame (24) is provided with a plurality of rollers (25) that can contact the column of the fan (1), characterized in that, Also includes: The connecting component (3) is installed below the fixed ring frame (21); The nozzle mechanism (4) has its annular array fixed to the bottom of the connecting component (3); A pumping mechanism (5), which is installed at the bottom of the connecting assembly (3), is used to pump de-icing agent into the nozzle mechanism (4); A gear motor (8) is mounted on a fixed ring frame (21) to drive the connecting assembly (3) to rotate the nozzle mechanism (4); The nozzle mechanism (4) includes a hanger (41) installed below the connecting assembly (3). A nozzle body (42) is movably sleeved on the hanger (41). An inner sleeve (43) is fixedly connected inside the nozzle body (42). A through groove (44) is opened on the inner sleeve (43). A pipe (45) is movably connected inside the inner sleeve (43). One end of the pipe (45) extends to the outside of the nozzle body (42) and is fixedly connected to the hanger (41). The end of the pipe (45) is also connected to the output end of the pump mechanism (5). An elastic member (46) is sleeved on the outer periphery of the nozzle body (42) between the nozzle body (42) and the hanger (41). A top rod assembly (47) is also fixedly connected to the nozzle body (42). The top rod assembly (47) includes an outer rod (471) fixedly connected to the nozzle body (42), a piston rod (472) is movably sleeved inside the outer rod (471), one end of the piston rod (472) is fixedly connected to the hanger (41), and an air passage (474) is fixedly connected to the outer rod (471), and the cavity of the outer rod (471) is connected to the outside through the air passage (474); The push rod assembly (47) also includes a one-way valve (473) disposed in the air passage (474), through which external gas can enter the outer rod (471) in one direction; The one-way valve disc (473) has a micro-hole in the middle, which is used to discharge the gas in the outer rod (471) to the outside through the micro-hole.

2. The blade de-icing device for high-altitude and cold regions according to claim 1, characterized in that: Both the fixed ring frame (21) and the cross frame (22) are provided with hanging ears (211); The lifting mechanism (6) includes a sling (61), a bracket (62) is installed on the top shaft of the fan (1), a guide wheel (63) is hinged at the bottom of the bracket (62), the sling (61) is wound around the guide wheel (63), one end of the sling (61) is installed on the lug (211), and the other end is connected to the winch on the ground.

3. The blade de-icing device for high-altitude and cold regions according to claim 1, characterized in that: The connecting assembly (3) includes a bearing component (31), a rotating ring frame (32), and a gear ring (33). The inner ring of the bearing component (31) is fixedly connected to the fixed ring frame (21), and the outer ring of the bearing component (31) is fixedly connected to the rotating ring frame (32). The gear ring (33) is fixedly installed on the rotating ring frame (32) and is connected to the output end of the gear motor (8). The nozzle mechanism (4) is installed at the bottom of the rotating ring frame (32).

4. The blade de-icing device for high-altitude and cold regions according to claim 1, characterized in that: The pump mechanism (5) includes a ring (51), a sealing ring (52) and a hose (53). The ring (51) is fixedly installed at the bottom of the fixed ring frame (21). The sealing ring (52) is movably installed on the inner ring of the ring (51), and the hose (53) is fixedly connected to the outer ring of the ring (51). One end of the pipe (45) passes through the sealing ring (52) and is connected to the circular ring (51), and the bottom end of the hose (53) is connected to the pump body.

5. The blade de-icing device for high-altitude and cold regions according to claim 1, characterized in that: The support mechanism (2) is also provided with a sub-frame assembly (7) for increasing the support stability of the support mechanism (2) and the column of the fan (1).

6. The blade de-icing device for high-altitude and cold regions according to claim 5, characterized in that: The subframe assembly (7) includes a slide rod (71), with both ends of the slide rod (71) movably sleeved on two guide rods (23). A Y-shaped connecting rod (72) is hinged to the bottom of the slide rod (71), and guide rollers (73) are sleeved on the bifurcation of the Y-shaped connecting rod (72). A telescopic rod (74) is installed in the middle of the V-shaped frame (24), and the bottom end of the telescopic rod (74) is hinged to the bifurcation intersection of the Y-shaped connecting rod (72). Pins (75) are symmetrically arranged on the slide rod (71). The guide rod (23) has an insertion hole (231). When the slide rod (71) slides above the insertion hole (231), one end of it can be inserted into the insertion hole (231) under the action of gravity.

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