Motor mounting structure of frequency conversion fan and method thereof

Abstract

The invention discloses a motor mounting structure of a frequency conversion fan, comprising: a bearing unit comprising an air duct and a fixing ring sleeving the outer surface of the air duct; the mounting and inserting unit comprises a dismounting ring connected to one side of the air duct in a clamping manner and a bearing plate connected to the upper surfaces of the air duct and the dismounting ring in a clamping manner; the pulling clamping unit comprises a bearing and fan blades fixedly connected to the outer surface of the bearing, and a third sliding groove is formed in the bearing; the motor installation method of the variable frequency fan comprises the following steps that 1, equipment is inspected, and a variable frequency motor and fan blades are installed through a T-shaped groove plate and a guide rail; and 2, the bearing and the rotating shaft are clamped through the linkage arc block. And the rotating shaft slides in and is clamped in the bearing through a hydraulic groove, a second spring and an L-shaped carrying rod, so that when the rotating shaft and the variable frequency motor need to be taken out, the rotating shaft and the variable frequency motor are prevented from entering the fan to be disassembled or assembled.

Description

Technical Field

[0001] The present invention relates to the technical field of motor mounting structures for variable frequency fans, and in particular to a motor mounting structure for a variable frequency fan and a method thereof. Background Art

[0002] In industrial production and daily life, fans are important ventilation equipment, and their performance and stability directly affect production efficiency and environmental quality. With the advancement of science and technology and the improvement of environmental awareness, variable frequency fans have gradually replaced traditional fixed speed fans and become the mainstream in the market because they can adjust the speed according to actual needs, thereby achieving energy saving and consumption reduction, reducing noise and other advantages. However, the motor mounting structure of the variable frequency fan is one of its core components. The rationality of its design, the convenience of installation and the stability of its operation are directly related to the performance and life of the entire fan.

[0003] Since the motors on existing fans are mostly fixed to the casing by a support frame or a support device, when the motor needs to be repaired or replaced, most maintenance personnel need to enter the casing to disassemble the support frame of the motor. At this time, the motor and fan blades need to be taken out of the casing, and then the rotating shaft of the fan blade and the output shaft of the motor need to be disassembled before the motor can be repaired or replaced. The motor cannot be repaired or replaced quickly. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problems existing in the above-mentioned existing motor installation structure and method of a variable frequency fan, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a motor installation structure and method for a variable frequency fan, which is suitable for solving the problem that when disassembling or installing the motor in the ventilation duct, it is necessary to enter the shell to disassemble the motor support frame, resulting in the inability to quickly inspect or replace the motor during the installation or disassembly of the equipment.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a motor mounting structure of a variable frequency fan, comprising: The bearing unit comprises a wind tube and a fixing ring sleeved on the outer surface of the wind tube, the upper surface of the wind tube is rotatably connected with a connecting shaft, and both sides of the fixing ring are threadedly connected with bolts; Install the plug-in unit, which includes a disassembly ring snap-connected to one side of the air duct and a load-bearing plate snap-connected to the upper surface of the air duct and the disassembly ring, the lower surface of the load-bearing plate is fixedly connected to a pressure rod, the inner surface of the disassembly ring is fixedly connected to a T-slot plate, a T-shaped plate is slidably connected in the T-slot plate, one side of the T-shaped plate is fixedly connected to a variable frequency motor, the output shaft of the variable frequency motor is fixedly connected to a rotating shaft, and the rotating shaft is provided with a first slide groove and two symmetrically arranged second slide grooves; A pulling and engaging unit includes a bearing and multiple groups of fan blades fixedly connected to the outer surface of the bearing, a third sliding groove is provided in the bearing, a rotating shaft is slidably connected in the third sliding groove, a linkage arc block is fixedly connected to the outer surface of the rotating shaft, connecting grooves are provided on the outer surfaces of both sides of the linkage arc block, and an arc-shaped plug rod is slidably connected in the connecting groove, an L-shaped movable groove is provided in the bearing, a first spring is fixedly connected to the inner end wall of the L-shaped movable groove, an end of the first spring away from the inner end wall of the L-shaped movable groove is fixedly connected to the L-shaped carrying rod, and the L-shaped carrying rod is matched with the L-shaped movable groove.

[0008] As a preferred solution of the motor mounting structure of a variable frequency fan described in the present invention, wherein: an adjustment plate is fixedly connected to the upper surface of the connecting shaft, a first handle is fixedly connected to the upper surface of the load-bearing plate, a limiting block is fixedly connected to the outer surface of the connecting shaft, a connecting block is fixedly connected to the upper surface of the limiting block, an adjusting plate is fixedly connected to the upper surface of the connecting block, and one end of the pressure rod is fixedly connected to the upper surface of the T-shaped plate.

[0009] As a preferred solution of the motor mounting structure of a variable frequency fan described in the present invention, wherein: the first sliding groove is slidably connected to the inner surface of the first sliding rod, both sides of the first sliding rod are hollowed out and connected to spring grooves, the bearing is hollowed out with a hydraulic groove, the hydraulic groove is slidably connected to a downward pressure rod, and the hydraulic groove is slidably connected to the first sliding rod.

[0010] As a preferred solution of the motor mounting structure of a variable frequency fan described in the present invention, wherein: a second spring is fixedly connected in the second slide groove, a second sliding clamping rod is fixedly connected at one end of the second spring, the second sliding clamping rod is slidably connected in the second slide groove, a telescopic groove is hollowed out in the bearing, and an arc-shaped plug rod is slidably connected in the telescopic groove.

[0011] As a preferred solution of the motor mounting structure of a variable frequency fan described in the present invention, one end of the L-shaped carrying rod is fixedly connected to the inner surface of the arc-shaped plug rod, limiting spring plates are fixedly connected on both sides of the first slide groove, and one side of the limiting spring plate is snap-connected in the spring groove, and a second slide groove is hollowed out in the bearing.

[0012] As a preferred solution of the motor mounting structure of a variable frequency fan described in the present invention, wherein: a second buffer plate is fixedly connected to the second slide groove near the bearing side, the second slide groove is in two groups, and the two groups of second slide grooves are symmetrical about the center of the rotation axis, and a limiting spring sheet matching the second sliding rod is fixedly connected to the inner wall of the second slide groove near the opening.

[0013] As a preferred solution of the motor mounting structure of a variable frequency fan described in the present invention, wherein: a guide rail is fixedly connected inside the air duct, and a movable plate is slidably connected to one side of the guide rail, a support plate is fixedly connected to the lower surface of the movable plate, a conical battery box and an electric push rod are fixedly connected to one side of the support plate, a clamping plate that engages with the end wall of the air duct is fixedly connected to the side of the movable plate away from the variable frequency motor, a second handle is fixedly connected to one side of the clamping plate, a first buffer plate is fixedly connected to one side of the electric push rod, a connecting rod is fixedly connected to the side of the first buffer plate away from the electric push rod, and the connecting rod is inserted into the inner surface of the insertion groove at one end of the bearing.

[0014] As a preferred solution of the motor mounting structure of the variable frequency fan described in the present invention, the outer surface of the connecting rod is wrapped with a layer of grid-patterned friction pad, and the thickness of the friction pad is one quarter to one third of the radius of the connecting rod.

[0015] As a preferred solution of the motor mounting structure of a variable frequency fan described in the present invention, wherein: a placement plate is fixedly connected to the lower surface of the variable frequency motor, a pillar is fixedly connected to the lower surface of the placement plate, an axis plate is fixedly connected to the upper surface of the placement plate, and the rotating shaft passes through the axis plate and is rotatably connected to the axis plate.

[0016] A motor installation method for a variable frequency fan, the motor installation method is applicable to any of the above motor installation structures of the variable frequency fan, and the motor installation method comprises the following steps: Step 1: Check the equipment and install the variable frequency motor and fan blades using T-slot plates and guide rails respectively; Step 2: Engage the bearing and the rotating shaft through the linkage arc block; Step 3: Using the internal structure of one end of the rotating shaft, the rotating shaft is gradually engaged with the bearing from a low-speed rotating state to a high-speed rotating state; Step 4: When disassembly is required, stop and start the variable frequency motor to recover the rotating shaft and the internal structure of the bearing; Step 5: Disassemble and maintain the device.

[0017] Beneficial effects of the present invention: 1. The T-slot plate and T-plate are used to realize the quick installation and removal of the variable frequency motor. This design makes it unnecessary to dismantle the entire fan housing when the motor needs to be maintained or replaced, which greatly simplifies the operation process and improves the maintenance efficiency. The load-bearing plate, pressure rod, placement plate and pillar are further used so that when the load-bearing plate is fixed, the pressure rod is subjected to the pressure of the load-bearing plate, so that the T-plate fixedly connected at one end of the pressure rod is synchronously engaged in the T-slot plate, so that the T-plate is prevented from displacement when the equipment is working to a certain extent, thereby avoiding displacement of the variable frequency motor carried by the T-plate; 2. The fan blades can be quickly moved and installed during installation and removal through the moving plate, guide rails, support plate, electric push rod and clamping plate, and then the moving plate is driven to move in the wind tube by the second handle, so that the electric push rod drives the connecting rod to extend into the bearing, so that the micro electric telescopic rod pushes the telescopic shaft to be embedded in the groove for engagement, and the bearing can be driven to move on the guide rail by the moving plate, so that the fan blades can be quickly placed in the wind tube and connected to the rotating shaft; 3. The rotating shaft is slid into and engaged with the bearing through the hydraulic groove, the first spring, the limit spring sheet, the second sliding clamp, the linkage arc block, the first sliding clamp, the second spring and the L-shaped carrying rod. When the rotating shaft and the variable frequency motor need to be taken out, the rotating shaft and the fan blade bearing can be quickly separated, thereby increasing the disassembly or installation speed between the motor and the bearing, and further avoiding the need to enter the fan for disassembly or installation during the installation or disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 This is a schematic diagram of the overall structure of a motor installation structure of a variable frequency fan proposed by the present invention; Figure 2 A schematic diagram of the overall structure inside the air duct of a motor mounting structure of a variable frequency fan proposed by the present invention; Figure 3 A schematic diagram of the connection structure between the bearing and the variable frequency motor of a motor mounting structure of a variable frequency fan proposed by the present invention; Figure 4 A schematic diagram of the arc-shaped plug-in rod distribution structure of a motor mounting structure of a variable frequency fan proposed by the present invention; Figure 5 A schematic diagram of an embedded slot structure of a motor mounting structure of a variable frequency fan proposed by the present invention; Figure 6A schematic cross-sectional view of a bearing and a rotating shaft of a motor mounting structure of a variable frequency fan proposed by the present invention; Figure 7 A schematic diagram of the rotating state structure of the rotating shaft and the bearing of the motor mounting structure of a variable frequency fan proposed by the present invention; Figure 8 The present invention is a flow chart of a method for installing a motor of a variable frequency fan.

[0019] Description of the drawings: 100, bearing unit; 101, wind tube; 102, fixing ring; 103, bolt; 104, first handle; 105, connecting shaft; 106, adjusting plate; 200, installation plug-in unit; 201, disassembly ring; 202, load-bearing plate; 203, limit block; 204, connecting block; 205, pressure rod; 206, T-shaped plate; 207, T-slot plate; 208, frequency conversion motor; 209, placement plate; 210, pillar; 300, pull-on engaging unit; 301, bearing; 302, fan blade; 303, first buffer plate; 304, connecting rod; 305, electric push rod; 306, support plate; 307, moving plate; 308, second Handle; 309, clamping plate; 310, guide rail; 311, conical battery box; 312, third slide slot; 313, linkage arc block; 314, hydraulic slot; 315, insertion slot; 332, second spring; 316, first slide slot; 317, rotating shaft; 318, second slide slot; 319, first sliding card rod; 320, limiting spring piece; 321, arc-shaped insertion rod; 322, telescopic slot; 323, connecting slot; 324, spring slot; 325, limiting spring piece; 326, second sliding card rod; 327, second buffer plate; 328, pressing rod; 329, first spring; 330, L-shaped carrying rod; 331, L-shaped moving slot; 332, second spring. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0023] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0024] Example 1

[0025] Reference Figure 1 - Figure 8 , which is an embodiment of the present invention, provides a motor mounting structure of a variable frequency fan, including a bearing unit 100, an installation plug-in unit 200 and a pulling and locking unit 300.

[0026] The bearing unit 100 includes a wind tube 101 and a fixing ring 102 sleeved on the outer surface of the wind tube 101. A connecting shaft 105 is rotatably connected to the upper surface of the wind tube 101. Bolts 103 are threadedly connected to both sides of the fixing ring 102. The liquid set in the hydraulic groove 314 inside the bearing 301 is water, and each connection position in the hydraulic groove 314 is provided with a sealing strip. Secondly, the installation plug-in unit 200 includes a disassembly ring 201 snap-fitted to one side of the air duct 101 and a load-bearing plate 202 snap-fitted to the upper surface of the air duct 101 and the disassembly ring 201, a pressure rod 205 is fixedly connected to the lower surface of the load-bearing plate 202, a T-slot plate 207 is fixedly connected to the inner surface of the disassembly ring 201, a T-shaped plate 206 is slidably connected inside the T-slot plate 207, a frequency conversion motor 208 is fixedly connected to one side of the T-shaped plate 206, and a rotating shaft 317 is fixedly connected to the output shaft of the frequency conversion motor 208, and a first sliding groove 316 and two symmetrically arranged second sliding grooves 318 are provided on the rotating shaft 317; Furthermore, the pulling engaging unit 300 includes a bearing 301 and a plurality of groups of fan blades 302 fixedly connected to the outer surface of the bearing 301, a third sliding groove 312 is provided in the bearing 301, a rotating shaft 317 is slidably connected in the third sliding groove 312, a linkage arc block 313 is fixedly connected to the outer surface of the rotating shaft 317, connecting grooves 323 are provided on the outer surfaces of both sides of the linkage arc block 313, and an arc-shaped plug rod 321 is slidably connected in the connecting groove 323, an L-shaped movable groove 331 is provided in the bearing 301, a first spring 329 is fixedly connected to the inner end wall of the L-shaped movable groove 331, an end of the first spring 329 away from the inner end wall of the L-shaped movable groove 331 is fixedly connected to an L-shaped carrying rod 330, and the L-shaped carrying rod 330 is matched with the L-shaped movable groove 331.

[0027] Furthermore, an adjustment plate 106 is fixedly connected to the upper surface of the connecting shaft 105, a first handle 104 is fixedly connected to the upper surface of the load-bearing plate 202, a limiting block 203 is fixedly connected to the outer surface of the connecting shaft 105, a connecting block 204 is fixedly connected to the upper surface of the limiting block 203, an adjustment plate 106 is fixedly connected to the upper surface of the connecting block 204, and one end of the pressure rod 205 is fixedly connected to the upper surface of the T-shaped plate 206. After the load-bearing plate 202 is disassembled, the load-bearing plate 202 can be pulled by the first handle 104, and the limiting block 203 can be rotated by using the adjusting plate 106, so that the limiting block 203 is engaged with one side of the load-bearing plate 202 to prevent it from popping out during work.

[0028] Further, a guide rail 310 is fixedly connected inside the wind tube 101, and a movable plate 307 is slidably connected to one side of the guide rail 310, a support plate 306 is fixedly connected to the lower surface of the movable plate 307, a conical battery box 311 and an electric push rod 305 are fixedly connected to one side of the support plate 306, a clamping plate 309 engaged with the end wall of the wind tube 101 is fixedly connected to the side of the movable plate 307 away from the variable frequency motor 208, a second handle 308 is fixedly connected to one side of the clamping plate 309, and a side of the electric push rod 305 is fixedly connected to the second handle 308. A first buffer plate 303 is fixedly connected, and a connecting rod 304 is fixedly connected to the side of the first buffer plate 303 away from the electric push rod 305. The connecting rod 304 is inserted into the inner surface of the insertion groove 315 at one end of the bearing 301, wherein the inner surface of the clamping plate 309 is engaged with the outer surface of the wind tube 101, so that the movable plate 307 can be moved in the wind tube 101 through the guide rail 310, and the structure of the conical battery box 311 is a triangular prism, so that it can provide power support when the electric push rod 305 is working.

[0029] Furthermore, the outer surface of the connecting rod 304 is wrapped with a layer of grid-patterned friction pad, and the thickness of the friction pad is one-quarter to one-third of the radius of the connecting rod 304 , wherein the grid-patterned friction pad increases the friction between the connecting rod 304 and the inner wall of the insertion groove 315 , thereby better enabling the connecting rod 304 to engage with the bearing 301 .

[0030] Furthermore, a placement plate 209 is fixedly connected to the lower surface of the variable frequency motor 208, a support 210 is fixedly connected to the lower surface of the placement plate 209, the lower surface of the support 210 is placed on the inner surface of the wind tube 101, an axis plate is fixedly connected to the upper surface of the placement plate 209, and a rotating shaft 317 is rotatably connected inside the axis plate, wherein when the rotating shaft 317 descends and connects with the bearing 301, it contacts the inner surface of the wind tube 101 through the lower surface of the support 210, thereby enabling the support 210 and the axis plate to provide auxiliary support for the rotating shaft 317 and the variable frequency motor 208.

[0031] A motor installation method for a variable frequency fan, the motor installation method is applicable to any of the above motor installation structures of the variable frequency fan, and the motor installation method comprises the following steps: Step 1: Check the equipment and install the variable frequency motor 208 and the fan blade 302 using the T-slot plate 207 and the guide rail 310 respectively; Step 2: The bearing 301 is engaged with the rotating shaft 317 through the linkage arc block 313; Step 3: Using the internal structure of one end of the rotating shaft 317, the rotating shaft 317 is gradually engaged with the bearing 301 from a low-speed rotating state to a high-speed rotating state; Step 4: When disassembly is required, the variable frequency motor 208 is stopped and started, so that the internal structure of the rotating shaft 317 and the bearing 301 can be recovered; Step 5: Disassemble and maintain the device.

[0032] Working principle: When the equipment is installed, the output shaft of the variable frequency motor 208 is sent into the third slide groove 312 through the sliding cooperation between the T-shaped plate 206 and the T-slot plate 207, and is stabilized by the pressure rod 205. At the same time, before the variable frequency motor 208 is installed, the second handle 308 drives the moving plate 307 to move on the side of the guide rail 310 in the wind tube 101, so that the moving plate 307 drives the electric push rod 305 to move, and then the electric push rod 305 pushes the bearing 301 to move toward the side of the variable frequency motor 208, so that the bearing 301 carries the fan blade 302 to the predetermined position in the wind tube 101, and then when the variable frequency motor 208 is lowered, the rotating shaft 317 slides into the third slide groove 312 of the bearing 301; When the equipment is disassembled, the output shaft of the variable frequency motor 208 is stopped to drive the rotating shaft 317. The elastic potential energy of the second spring 332 is greater than the limit spring sheet 325, so that the second spring 332 can pull back the second sliding clamping rod 326, thereby avoiding the rotating shaft 317 and the bearing 301 from being engaged when separated, thereby preventing them from being unable to quickly disengage. At the same time, the first sliding clamping rod 319 and the pressing rod 328 in the hydraulic groove 314 are used to release the connection between the bearing 301 and the rotating shaft 317 when the rotating shaft 317 is lifted, thereby opening the load-bearing plate 202 and taking out the variable frequency motor 208, so that the output shaft of the variable frequency motor 208 can be easily disassembled. The rotating shaft 317 at one end of the output shaft is taken out from the third slide groove 312. When the rotating shaft 317 is separated from the first sliding clamp 319, the liquid inside the hydraulic groove 314 is used to move the first sliding clamp 319 downward, and at the same time, the liquid inside the hydraulic groove 314 is used to push the pressing rod 328 up, and the first sliding clamp 319 is stored in the hydraulic groove 314, so that the rotating shaft 317 can be quickly separated from the bearing 301, so that the T-shaped plate 206 and the movable plate 307 can be used to take out the frequency conversion motor 208 and the fan blade 302 for maintenance or replacement, so that the overall disassembly or installation speed of the equipment can be improved to a certain extent.

[0033] Example 2

[0034] Reference Figure 4 - Figure 7 , compared with the first embodiment, the difference is that: the inner surface of the first sliding groove 316 is slidably connected to the first sliding clamping rod 319, both sides of the first sliding clamping rod 319 are hollowed out and connected to spring grooves 324, a hydraulic groove 314 is hollowed out in the bearing 301, a downward pressure rod 328 is slidably connected in the hydraulic groove 314, and the first sliding clamping rod 319 is slidably connected in the hydraulic groove 314, wherein the number of spring grooves 324 is several, and the several spring grooves 324 are symmetrical about the center of the first sliding clamping rod 319, and the first sliding clamping rod 319 is engaged with the spring groove 324 in cooperation with the limiting spring sheet 320, so that the bearing 301 is preliminarily connected to the rotating shaft 317 during the placement process.

[0035] Furthermore, a second spring 332 is fixedly connected in the second slide groove 318, one end of the second spring 332 is fixedly connected to a second sliding rod 326, the second sliding rod 326 is slidably connected in the second slide groove 318, a telescopic groove 322 is hollowed out in the bearing 301, and an arc-shaped plug rod 321 is slidably connected in the telescopic groove 322, wherein the elastic potential energy of the second spring 332 is greater than the elastic potential energy of the pressure-limiting spring sheet 325, so that after the rotating shaft 317 stops rotating, the second spring 332 can retract the second sliding rod 326 according to the elastic potential energy of the second spring 332.

[0036] Furthermore, one end of the L-shaped carrying rod 330 is fixedly connected to the inner surface of the arc-shaped insertion rod 321, and the limiting spring pieces 320 are fixedly connected to both sides of the first slide groove 316, and one side of the limiting spring piece 320 is snap-connected in the spring groove 324, and a second slide groove 318 is hollowed out in the bearing 301, wherein the L-shaped carrying rod 330 can slide in the L-shaped movable groove 331 and simultaneously limit the arc-shaped insertion rod 321.

[0037] Furthermore, a second buffer plate 327 is fixedly connected to the second slide groove 318 near the side of the bearing 301, and the second slide groove 318 is in two groups, and the two groups of second slide grooves 318 are symmetrical about the center of the rotation shaft 317. A limit spring piece 325 matching the second sliding card rod 326 is fixedly connected to the inner wall of the second slide groove 318 near the opening, wherein when the arc plug rod 321 is pushed by the second sliding card rod 326, the arc plug rod 321 slides in the bearing 301 using the telescopic groove 322, so that the bearing 301 is linked to the outer surface of the rotation shaft 317 through the arc plug rod 321. 13 is engaged, so that the bearing 301 and the rotating shaft 317 are fully connected under high-speed rotation. In addition, the second sliding clamping rod 326 first needs to squeeze the limiting spring sheet 325 to deform it so that when the second sliding clamping rod 326 contacts the bearing 301, the elastic potential energy of the limiting spring sheet 325 and the centrifugal force together offset the elastic potential energy generated by the second spring 332, thereby preventing the second spring 332 from removing the second sliding clamping rod 326 from the bearing 301 under high-speed rotation of the rotating shaft 317, thereby causing a safety hazard between the rotating shaft 317 and the bearing 301 under high-speed rotation.

[0038] Working principle: When the bearing 301 is installed in contact with the rotating shaft 317, the rotating shaft 317 squeezes the lower pressure rod 328 during its descent, so that the lower pressure rod 328 squeezes the internal liquid downward along the hydraulic groove 314, and the liquid is poured into the middle, and pushes the first sliding clamp 319 to move upward into the first slide groove 316 in the rotating shaft 317. At the same time, the limiting spring piece 320 on the inner surface of the first slide groove 316 is used to contact the spring groove 324 below one side of the first sliding clamp 319, and then the first sliding clamp 319 is limited, so that the rotating shaft 317 and the bearing 301 are preliminarily connected before entering high-speed rotation, so that the rotating shaft 317 drives the bearing 301 to rotate through the first sliding clamp 319 during the rotation process; When the first sliding rod 319 is connected with the first sliding groove 316, the rotating shaft 317 rotates at a high speed, and the rotating shaft 317 rotates at a high speed, so that the second sliding rod 326 slides along the second sliding groove 318 into the outer peripheral bearing 301 of the rotating shaft 317 under the action of the centrifugal force generated when the rotating shaft 317 rotates. When the second sliding rod 326 slides further, the second sliding rod 326 stretches the second spring 332, so that the second spring 332 deforms and generates elastic potential energy. At the same time, when the second sliding rod 326 slides in the second sliding groove 318, the second sliding rod 326 first needs to squeeze the limiting spring sheet 325 to deform it so that when the second sliding rod 326 contacts the bearing 301, the elastic potential energy of the limiting spring sheet 325 and the centrifugal force jointly offset the elastic potential energy generated by the second spring 332, so that the rotating shaft 317 can fully drive the bearing 301 to rotate during the high-speed rotation, so that the entire device can be quickly integrated and installed.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A motor mounting structure for a variable frequency fan, characterized in that: include: The bearing unit (100) comprises a wind tube (101) and a fixing ring (102) sleeved on the outer surface of the wind tube (101); a connecting shaft (105) is rotatably connected to the upper surface of the wind tube (101); and bolts (103) are threadedly connected to both sides of the fixing ring (102); and an installation plug-in unit (200) comprises a disassembly ring (201) snap-fitted to one side of the wind tube (101) and a load-bearing member snap-fitted to the upper surface of the wind tube (101) and the disassembly ring (201). The load-bearing plate (202) is fixedly connected to a pressure rod (205) on its lower surface, the inner surface of the disassembly ring (201) is fixedly connected to a T-shaped slot plate (207), a T-shaped plate (206) is slidably connected inside the T-shaped slot plate (207), a variable frequency motor (208) is fixedly connected to one side of the T-shaped plate (206), an output shaft of the variable frequency motor (208) is fixedly connected to a rotating shaft (317), and a first sliding groove ( 316) and two symmetrically arranged second slide grooves (318); a pulling engaging unit (300), comprising a bearing (301) and a plurality of groups of fan blades (302) fixedly connected to the outer surface of the bearing (301); a third slide groove (312) is provided in the bearing (301); a rotating shaft (317) is slidably connected in the third slide groove (312); a linkage arc block (313) is fixedly connected to the outer surface of the rotating shaft (317); and both sides of the linkage arc block (313) have outer surfaces A connecting groove (323) is provided on each surface, and an arc-shaped insertion rod (321) is slidably connected in the connecting groove (323); an L-shaped movable groove (331) is provided in the bearing (301); a first spring (329) is fixedly connected to the inner end wall of the L-shaped movable groove (331); an end of the first spring (329) away from the inner end wall of the L-shaped movable groove (331) is fixedly connected to an L-shaped carrying rod (330); and the L-shaped carrying rod (330) is matched with the L-shaped movable groove (331).

2. The motor mounting structure of a variable frequency fan according to claim 1, characterized in that: The upper surface of the connecting shaft (105) is fixedly connected to an adjustment plate (106), the upper surface of the load-bearing plate (202) is fixedly connected to a first handle (104), the outer surface of the connecting shaft (105) is fixedly connected to a limit block (203), the upper surface of the limit block (203) is fixedly connected to a connecting block (204), the upper surface of the connecting block (204) is fixedly connected to the adjustment plate (106), and one end of the pressure rod (205) is fixedly connected to the upper surface of the T-shaped plate (206).

3. The motor mounting structure of a variable frequency fan according to claim 1, characterized in that: The inner surface of the first sliding groove (316) is slidably connected to a first sliding clamping rod (319), and both sides of the first sliding clamping rod (319) are hollowed out and connected to spring grooves (324). A hydraulic groove (314) is hollowed out in the bearing (301), a downward pressing rod (328) is slidably connected in the hydraulic groove (314), and the first sliding clamping rod (319) is slidably connected in the hydraulic groove (314).

4. The motor mounting structure of a variable frequency fan according to claim 3 is characterized in that: A second spring (332) is fixedly connected in the second slide groove (318), one end of the second spring (332) is fixedly connected to a second sliding clamping rod (326), the second sliding clamping rod (326) is slidably connected in the second slide groove (318), a telescopic groove (322) is hollowed out in the bearing (301), and an arc-shaped insertion rod (321) is slidably connected in the telescopic groove (322).

5. The motor mounting structure of a variable frequency fan according to claim 4, characterized in that: One end of the L-shaped carrying rod (330) is fixedly connected to the inner surface of the arc-shaped insertion rod (321), both sides of the first slide groove (316) are fixedly connected to the limiting spring pieces (320), and one side of the limiting spring piece (320) is snap-connected in the spring groove (324), and a second slide groove (318) is hollowed out in the bearing (301).

6. The motor mounting structure of a variable frequency fan according to claim 5, characterized in that: A second buffer plate (327) is fixedly connected to one side of the second slide groove (318) close to the bearing (301), the second slide groove (318) is provided in two groups, and the two groups of second slide grooves (318) are symmetrical about the center of the rotation axis (317), and a limiting spring sheet (325) matching the second sliding rod (326) is fixedly connected to the inner wall of the second slide groove (318) close to the opening.

7. The motor mounting structure of a variable frequency fan according to claim 6, characterized in that: A guide rail (310) is fixedly connected inside the wind tube (101), and a movable plate (307) is slidably connected to one side of the guide rail (310), a support plate (306) is fixedly connected to the lower surface of the movable plate (307), one side of the support plate (306) is fixedly connected to a conical battery box (311) and an electric push rod (305), a clamping plate (309) that engages with the end wall of the wind tube (101) is fixedly connected to the side of the movable plate (307) away from the variable frequency motor (208), a second handle (308) is fixedly connected to one side of the clamping plate (309), a first buffer plate (303) is fixedly connected to one side of the electric push rod (305), a connecting rod (304) is fixedly connected to the side of the first buffer plate (303) away from the electric push rod (305), and the connecting rod (304) is inserted into the inner surface of an insertion groove (315) at one end of the bearing (301).

8. The motor mounting structure of a variable frequency fan according to claim 7, characterized in that: The outer surface of the connecting rod (304) is wrapped with a layer of grid-patterned friction pad, and the thickness of the friction pad is one quarter to one third of the radius of the connecting rod (304).

9. The motor mounting structure of a variable frequency fan according to claim 8, characterized in that: The lower surface of the variable frequency motor (208) is fixedly connected to a placement plate (209), the lower surface of the placement plate (209) is fixedly connected to a support column (210), the upper surface of the placement plate (209) is fixedly connected to an axis plate, and the rotating shaft (317) passes through the axis plate and is rotationally connected to the axis plate.

10. A method for installing a motor of a variable frequency fan, applicable to the motor installation structure of a variable frequency fan according to any one of claims 1 to 9, characterized in that: The motor installation method comprises the following steps: Step 1: Check the equipment and install the variable frequency motor (208) and the fan blade (302) using the T-slot plate (207) and the guide rail (310) respectively; Step 2: The bearing (301) is engaged with the rotating shaft (317) by means of the linkage arc block (313); Step 3: Using the internal structure of one end of the rotating shaft (317), the rotating shaft (317) is gradually engaged with the bearing (301) from a placement state to a high-speed rotation state; Step 4: When disassembly is required, the variable frequency motor (208) is stopped and started, so that the internal structure of the rotating shaft (317) and the bearing (301) can be recovered; Step 5: Disassemble and maintain the device.

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