An impeller disassembly device and centrifugal fan maintenance equipment

Abstract

This invention relates to an impeller disassembly device and centrifugal fan maintenance equipment. The impeller disassembly device includes a mounting base, a hollow rotating platform, a clamping assembly, and a pneumatic impact assembly. The hollow rotating platform has a hollow guide shaft with an axial through hole. The clamping assembly includes a first guide part, a clamping part, and a second guide part arranged coaxially. The first guide part is slidably fitted onto the hollow guide shaft. An annular space is formed between the second guide part and the first guide part. The clamping part is located in the annular space and is used to clamp impellers of different diameters. The hollow rotating platform drives the second guide part to rotate, causing the clamping part to move axially, thereby opening and closing the clamping end of the clamping part. The pneumatic impact assembly includes an impact rod that passes through the axial through hole and is coaxially arranged with the first guide part, the second guide part, and the clamping part, for separating the impeller and the motor shaft. This application integrates coaxial clamping and impact functions, has a simple and compact structure, and improves its coaxiality, adaptability, and disassembly efficiency.

Description

Technical Field

[0001] This invention belongs to the field of centrifugal fan maintenance technology, and particularly relates to an impeller disassembly device and centrifugal fan maintenance equipment. Background Technology

[0002] Centrifugal fans are core ventilation and heat exchange equipment in railway vehicles and high-speed rail air conditioning units. They are primarily responsible for air circulation, heat exchange and cooling, and ventilation within the carriages, directly determining passenger comfort and the operational stability of supporting equipment. High-speed rail and rail transit vehicles operate under complex conditions, and centrifugal fans are subjected to harsh working environments of vibration, temperature fluctuations, and moisture in the carriages. The impeller and motor shaft, as core transmission components of the centrifugal fan, are generally assembled using high-precision interference fits to meet the vibration resistance, anti-loosening, and stable transmission requirements under high-speed rail operation. During long-term vehicle operation, the impeller and motor shaft mating points are prone to oxidation, rust, oil buildup, and seizing due to moisture, dust, continuous vibration, and alternating temperature changes within the carriages. The tightening force increases over time, posing significant challenges to the scheduled inspection, maintenance, and component replacement of railway vehicle air conditioning units.

[0003] Currently, the industry still widely uses traditional disassembly tools combined with manual labor for disassembly of impellers in centrifugal fans of railway vehicle air conditioning units. Common tools include mechanical pullers, hydraulic jacks, and jacking screw disassembly fixtures. During maintenance, hammering and localized flame heating are often used to break up rusted and seized structures. Traditional mechanical pullers have fixed clamping specifications and poor versatility, making them unsuitable for the various diameter precision impellers in high-speed rail air conditioning units, requiring frequent tool changes during maintenance. The static jacking disassembly method has poor thrust stability; when faced with rusted and seized shaft-hub structures, disassembly resistance is high, disassembly efficiency is low, and it easily causes cracking of the precision impeller hub and stripping of the motor shaft threads. Since railway air conditioning fan components have high precision requirements, damaged components are generally unusable. The crude disassembly methods such as flame heating and manual hammering not only easily cause impeller deformation and shaft bending but also pose safety risks such as burns and metal splatter, failing to meet the high-precision, low-damage, and high-safety maintenance standards for railway vehicles.

[0004] Existing disassembly fixtures still have significant technical shortcomings in the disassembly of railway air conditioning centrifugal fans: First, conventional disassembly fixtures have simple clamping structures and poor positioning accuracy. During disassembly, the impeller is prone to eccentric displacement, and uneven force can cause deformation of the precision impeller and bending of the motor shaft, seriously affecting the assembly accuracy of rail transit equipment after maintenance and increasing traffic safety hazards. Second, traditional fixture clamping mechanisms and impact disassembly mechanisms are mostly separate structures, which are prone to radial displacement during disassembly impact, resulting in dispersed force. This not only leads to poor rust removal and disassembly effects but also exacerbates hard wear on precision mating surfaces. Third, existing disassembly fixtures have poor adaptability and cannot be compatible with various specifications of air conditioning centrifugal fans in high-speed rail and ordinary railway vehicles. Maintenance workshops need to keep a variety of special fixtures, making tool management cumbersome, increasing railway maintenance costs, and failing to meet the operational needs of rapid batch maintenance in railways.

[0005] Therefore, how to provide an impeller disassembly device that is compact, stable in disassembly, improves maintenance efficiency, and combines precise coaxial clamping with pneumatic non-destructive impact is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] To solve at least one of the above-mentioned technical problems, the present invention provides an impeller disassembly device, comprising: Mounting base; A hollow rotating platform is mounted on a mounting base and has a hollow guide shaft, wherein the hollow guide shaft is provided with an axial through hole; The clamping assembly includes a first guide portion, a clamping portion, and a second guide portion arranged coaxially. The first guide portion is slidably sleeved on a hollow guide shaft. The second guide portion is sleeved on the first guide portion and forms an annular space with the first guide portion, and is driven to a hollow rotating platform. The clamping portion is located in the annular space and is driven to the second guide portion. The hollow rotating platform drives the second guide portion to rotate, thereby causing the clamping portion to move axially along the first guide portion, realizing the opening and closing of the clamping end of the clamping portion. The clamping portion is used to clamp impellers of different diameters. A pneumatic impact assembly, mounted on a mounting base, includes an impact rod that passes through the axial through hole and is coaxially arranged with a first guide part, a second guide part, and a clamping part. The impact rod is used to clamp the motor shaft on the impeller by impacting the clamping part, so as to separate the impeller and the motor shaft.

[0007] Furthermore, the hollow rotating platform includes: The platform body is fixedly mounted on the mounting base. A hollow guide shaft passes through the platform body. The side of the platform body near the clamping component has a rotatable platform movable surface. The platform movable surface is connected to the clamping component and is used to drive the clamping component to rotate. A rotary drive component, located within the platform body, is used to drive the rotating surface of the platform.

[0008] Furthermore, the first guide section includes: A connecting sleeve is fitted onto the hollow guide shaft and is coaxially arranged with the hollow guide shaft, and can slide relative to the hollow guide shaft; The positioning plate is fixedly sleeved at the end of the connecting shaft sleeve that is away from the platform body.

[0009] Furthermore, the clamping part includes: The external gear disc is sleeved on the connecting bushing and is located on the side of the positioning disc closer to the platform body. It can move along the axial direction of the connecting bushing. The axial length of the external gear disc is less than the length of the connecting bushing. The clamping component is located on the side of the outer gear disk away from the platform body and is radially slidably connected to the outer gear disk. The clamping end of the clamping component extends out of the axial end face of the annular space along the side away from the outer gear disk. The outer gear disk is used to drive the clamping component to move axially along the connecting bushing to realize the opening or closing of the clamping component.

[0010] Furthermore, the second guide section includes: An internal gear disk is coaxially arranged with the connecting sleeve and the external gear disk, and is located on the side of the external gear disk away from the connecting sleeve. It forms the annular space with the connecting sleeve and meshes with the external gear disk for transmission. The two opposite sides of the internal gear disk and the positioning sleeve have matching inner and outer conical surfaces, respectively. The distance between the inner and outer conical surfaces is constant. The inner and outer conical surfaces together position the clamping member. The internal gear disk is used to drive the external gear disk to rotate so that the external gear disk moves along the axial direction of the connecting sleeve. The rotating disk is located between the platform's movable surface and the internal gear disk. It is connected to the platform's movable surface for transmission and partially sleeved with the internal gear disk. The platform's movable surface drives the rotating disk to rotate, thereby driving the internal gear disk to rotate. The rotating disk has an elongated hole on the side near the internal gear disk, and the axis of the elongated hole is perpendicular to the axis of the rotating disk. A pin is inserted through the elongated hole, connecting the rotating disk and the internal gear disk. The pin and the elongated hole work together to allow the internal gear disk to move axially relative to the rotating disk.

[0011] Furthermore, the clamping component includes three movable jaws, which together form a clamping structure with an adjustable diameter. The movable jaws are located in the annular space and are limited by the outer conical surface of the positioning disk and the inner conical surface of the inner toothed disk. The outer gear disc has a radial T-slot on the side corresponding to the clamping component. The radial T-slots correspond one-to-one with the movable jaws. Each movable jaw can slide along the corresponding radial T-slot to adjust the encircling diameter of the three movable jaws.

[0012] Furthermore, the aerodynamic impact assembly also includes: The impact cylinder is mounted on the mounting base, with the movable surface of the platform facing away from the rotating disk. Its output end is connected to the impact rod, which is used to drive the impact rod to push the motor shaft on the impeller.

[0013] Furthermore, it also includes a movable component, which is sleeved on the connecting bushing and located on the side of the outer gear plate away from the clamping member. The inner side of the movable component is connected to the connecting bushing, and its outer side is fixedly connected to the inner gear plate. It is used to drive the inner gear plate, the connecting bushing, and the positioning plate to move synchronously along the hollow guide shaft axially, so as to adjust the encircling diameter of the clamping member together with the outer gear plate.

[0014] Furthermore, the moving component includes a guide disk and a rotating bushing. The guide disk is sleeved on the connecting bushing, and the rotating bushing is nested between the connecting bushing and the guide disk. The guide disk is fixedly connected to one end of the inner gear disk near the platform body. The guide disk is used to drive the inner gear disk, the connecting bushing, and the positioning disk to move synchronously along the hollow guide shaft axially, so as to adjust the encircling diameter of the clamping component together with the outer gear disk.

[0015] In addition, the present invention also provides a centrifugal fan maintenance device, including any of the impeller disassembly devices described above.

[0016] This invention provides an impeller disassembly device and centrifugal fan maintenance equipment. The impeller disassembly device includes a mounting base, a hollow rotating platform, a clamping assembly, and a pneumatic impact assembly. The hollow rotating platform is mounted on the mounting base and has a hollow guide shaft with an axial through hole. A first guide portion is slidably sleeved on the hollow guide shaft, and a second guide portion is sleeved on the first guide portion, forming an annular space between them. The clamping portion is located in the annular space. The clamping assembly in this application adopts a coaxial arrangement of the first guide portion, the clamping portion, and the second guide portion. The pneumatic impact assembly includes an impact rod that passes through the axial through hole and is coaxially arranged with the first guide portion, the second guide portion, and the clamping portion. This achieves coaxial arrangement of the clamping assembly and the pneumatic impact assembly, ensuring that the impeller, motor shaft, and impact center are highly coincident during disassembly, effectively solving the problems of eccentric force and radial offset in traditional tooling. The coaxial structure avoids damage problems such as impeller skewing, motor shaft bending, and hub deformation during disassembly, meeting the high-precision component disassembly requirements of high-speed rail air conditioning fans, significantly improving the secondary reuse rate of components, and conforming to the low-damage, high-precision maintenance standards of rail transit. The clamping part of this application achieves axial movement through a hollow rotating platform and uses mechanical transmission to open and close the clamping end, adaptively clamping centrifugal fan impellers of different outer diameters, demonstrating strong versatility. It can adapt to multiple models of centrifugal fans for railways and high-speed rail without frequent tooling changes, reducing the number of tooling reserves in maintenance workshops, simplifying tool management processes, lowering rail transit equipment maintenance costs, and adapting to batch maintenance needs, thus improving the adaptability of maintenance operations. This application uses a pneumatic impact component as the disassembly power source, replacing traditional crude disassembly methods such as manual hammering, flame heating, and static pushing. The concentrated pneumatic impact force and controllable impact intensity enable rapid removal of rust, scale, and seized structures from the mating surfaces of the impeller and motor shaft. Disassembly resistance is low, and disassembly efficiency is high. Simultaneously, the absence of open flames and hard impacts avoids safety hazards such as burns, metal splashes, and thermal deformation of parts, improving the working environment and enhancing the safety of railway maintenance operations. Furthermore, this application boasts a high degree of automation. Mechanical control and clamping via a hollow rotating platform, along with the coaxial arrangement of the pneumatic impact and clamping components, jointly complete the impact disassembly, reducing manual assistance and lowering the labor intensity of operators. The simple and compact structure of this application facilitates on-site handling and use, making it suitable for routine maintenance and fault repair of air conditioning units in high-speed and conventional railway vehicles. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort. In the drawings, the same parts use the same reference numerals. The drawings are not drawn to scale.

[0018] Figure 1 This is a schematic diagram from one perspective of an embodiment of an impeller disassembly device according to the present invention; Figure 2 This is a schematic diagram from another perspective of one embodiment of an impeller disassembly device according to the present invention; Figure 3 This is yet another schematic diagram of an embodiment of an impeller disassembly device according to the present invention; Figure 4 This is a schematic diagram from a perspective of another embodiment of an impeller disassembly device according to the present invention; Figure 5 This is a schematic diagram from another perspective of another embodiment of an impeller disassembly device according to the present invention.

[0019] Key component symbols: 100-Impeller disassembly device; 110-Mounting base; 120-Hollow rotating platform; 121-Hollow guide shaft; 122-Platform body; 1221-Platform moving surface; 123-Rotation drive component; 130-Clamping assembly; 131-First guide part; 1311-Connecting bushing; 1312-Positioning plate; 132-Second guide part; 1321-Internal gear plate; 1322-Rotating plate; 1323-Pin; 133-Clamping part; 1331-External gear plate; 1332-Clamping component; 140-Pneumatic impact assembly; 141-Impact rod; 142-Impact cylinder; 150-Moving assembly; 151-Guide plate; 1511-Cover plate; 1512-Connecting base; 152-Rotating bushing. Detailed Implementation

[0020] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0022] It should also be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., these directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly. Furthermore, if the embodiments of the present invention involve descriptions such as "first," "second," "S1," "S2," "step one," "step two," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance, or implicitly indicating the number of technical features indicated or the order of method execution. Those skilled in the art will understand that anything that does not violate the inventive concept and does not contradict the inventive points should be included within the scope of protection of the present invention.

[0023] like Figure 1 and Figure 3 As shown, the present invention provides an impeller disassembly device 100, which includes a mounting base 110, a hollow rotating platform 120, a clamping assembly 130, and a pneumatic impact assembly 140.

[0024] The hollow rotating platform 120 is fixedly installed on the mounting base 110. The hollow rotating platform 120 has a hollow guide shaft 121, which is provided with an axial through hole.

[0025] Specifically, the clamping assembly 130 in this embodiment includes a first guide portion 131, a clamping portion 133, and a second guide portion 132 arranged coaxially. The first guide portion 131 is slidably sleeved on the hollow guide shaft 121, and the second guide portion 132 is sleeved on the first guide portion 131, forming an annular space between them, and is drive-connected to the hollow rotating platform 120. Furthermore, the clamping portion 133 in this embodiment is located in the annular space and is drive-connected to the second guide portion 132. In this embodiment, the hollow rotating platform 120 drives the second guide portion 132 to rotate, thereby causing the clamping portion 133 to move axially along the first guide portion 131, thus opening and closing the clamping end of the clamping portion 133. In this embodiment, the clamping portion 133 can clamp impellers of different diameters.

[0026] In addition, the pneumatic impact assembly 140 in this embodiment is mounted on the mounting base 110. The pneumatic impact assembly 140 includes an impact rod 141, which passes through the axial through hole and is coaxially arranged with the first guide part 131, the second guide part 132, and the clamping part 133. In this embodiment, the impact rod 141 impacts the clamping part 133 to clamp the motor shaft on the impeller, thereby separating the impeller and the motor shaft and realizing the disassembly of the motor shaft from the middle of the impeller.

[0027] In this embodiment, the present invention provides an impeller disassembly device 100, which includes a mounting base 110, a hollow rotating platform 120, a clamping assembly 130, and a pneumatic impact assembly 140. The hollow rotating platform 120 is mounted on the mounting base 110 and has a hollow guide shaft 121 with an axial through hole. A first guide portion 131 is slidably sleeved on the hollow guide shaft 121, and a second guide portion 132 is sleeved on the first guide portion 131, forming an annular space between them. The clamping portion 130... Located in the annular space, the clamping assembly 130 in this embodiment adopts a coaxial arrangement of the first guide portion 131, the clamping portion 133, and the second guide portion 132. The pneumatic impact assembly 140 includes an impact rod 141, which passes through an axial through hole and is coaxially arranged with the first guide portion 131, the second guide portion 132, and the clamping portion 133. This achieves coaxial arrangement of the clamping assembly 130 and the pneumatic impact assembly 140, ensuring that the impeller, motor shaft, and impact center are highly aligned during disassembly, effectively solving the problems of eccentric force and radial offset in traditional tooling. The coaxial structure avoids damage problems such as impeller skewing, motor shaft bending, and hub deformation during disassembly, adapting to the high-precision component disassembly requirements of high-speed rail air conditioning ventilation fans, significantly improving the secondary reuse rate of components, and meeting the low-damage, high-precision maintenance standards for rail transit.

[0028] Furthermore, in this embodiment, the clamping part 133 is driven to move axially via the hollow rotating platform 120, and the opening and closing of the clamping end is achieved through mechanical transmission. It can adaptively clamp centrifugal fan impellers of different outer diameters, exhibiting strong versatility. It can adapt to various models of centrifugal fans used in railways and high-speed railways without frequent tooling changes, reducing the number of tooling reserves in maintenance workshops, simplifying tool management processes, lowering maintenance costs for rail transit equipment, and simultaneously adapting to batch maintenance needs, thus improving the adaptability of maintenance operations.

[0029] In this embodiment, a pneumatic impact assembly 140 is used as the disassembly power source, replacing traditional crude disassembly methods such as manual hammering, flame heating, and static pushing. The pneumatic impact force is concentrated and controllable, quickly breaking through rust, scale, and seized structures on the mating surfaces of the impeller and motor shaft. Disassembly resistance is low and disassembly efficiency is high. Simultaneously, there is no open flame or hard hammering, avoiding safety hazards such as burns, metal splashes, and thermal deformation of parts, improving the working environment and enhancing the safety of railway maintenance operations. Furthermore, this embodiment has a high degree of automation. The hollow rotating platform 120 mechanically controls the clamping, and the pneumatic impact assembly 140 and clamping assembly 130 are coaxially arranged to jointly complete the impact disassembly, reducing manual assistance and lowering the labor intensity of operators. The impeller disassembly device 100 in this embodiment has a simple and compact structure, is easy to transport and use on-site, and is suitable for daily scheduled inspections and fault maintenance of air conditioning units in high-speed and conventional railway vehicles.

[0030] Optionally, such as Figure 3 As shown, the hollow rotating platform 120 in this embodiment also includes a platform body 122 and a rotating drive component 123.

[0031] In this embodiment, the platform body 122 is fixedly mounted on the mounting base 110 by bolts, and the hollow guide shaft 121 extends laterally through the platform body 122. The side of the platform body 122 near the clamping assembly 130 is provided with a rotatable platform movable surface 1221, which is connected to the clamping assembly 130 and is used to drive the clamping assembly 130 to rotate.

[0032] In addition, in this embodiment, the rotation drive 123 is disposed within the platform body 122 and is connected to the platform movable surface 1221 to drive the platform movable surface 1221 to rotate. Optionally, the rotation drive 123 in this embodiment is, for example, a servo motor.

[0033] Optionally, the first guide portion 131 in this embodiment includes a connecting bushing 1311 and a positioning disk 1312.

[0034] In this embodiment, the connecting sleeve 1311 is sleeved on the hollow guide shaft 121 and coaxially arranged with it, allowing it to slide relative to the hollow guide shaft 121 along its axial direction. Additionally, in this embodiment, the positioning disk 1312 is fixedly sleeved on the end of the connecting sleeve 1311 furthest from the platform body 122, and is used to position the clamping part 133. The length of the positioning disk 1312 is less than the length of the connecting sleeve 1311.

[0035] Optionally, such as Figure 2 and Figure 3 As shown, the clamping part 133 in this embodiment includes an external toothed disc 1331 and a clamping member 1332.

[0036] In this embodiment, the outer gear disk 1331 is sleeved on the connecting bushing 1311 and located on the side of the positioning disk 1312 near the platform body 122. It can move axially along the connecting bushing 1311, and the axial length of the outer gear disk 1331 is less than the length of the connecting bushing 1311. Additionally, the clamping member 1332 is located on the side of the outer gear disk 1331 away from the platform body 122 and is radially slidably connected to the outer gear disk 1331. The clamping end of the clamping member 1332 extends axially from the annular space along the side away from the outer gear disk 1331. The outer gear disk 1331 drives the clamping member 1332 to move axially along the connecting bushing 1311, thereby opening or closing the clamping member 1332. Optionally, the clamping member in this embodiment may be, for example, a three-jaw chuck.

[0037] Optionally, such as Figure 2 and Figure 3 As shown, the second guide portion 132 in this embodiment includes an internal gear disk 1321, a rotating disk 1322, and a pin 1323.

[0038] In this embodiment, the internal gear disk 1321 is coaxially arranged with the connecting sleeve 1311 and the external gear disk 1331, and is located on the side of the external gear disk 1331 opposite to the connecting sleeve 1311. The internal gear disk 1321 and the connecting sleeve 1311 form the annular space, and the internal gear disk 1321 meshes and drives the external gear disk 1331. The two corresponding surfaces of the internal gear disk 1321 and the positioning sleeve have mating inner and outer conical surfaces, respectively. The distance between the inner and outer conical surfaces is constant. In this embodiment, the inner and outer conical surfaces together position the clamping member 1332. The internal gear disk 1321 is used to drive the external gear disk 1331 to rotate, so that the external gear disk 1331 moves axially along the connecting sleeve 1311. Optionally, in this embodiment, both the inner and outer conical surfaces are, for example, 45°.

[0039] Specifically, in this embodiment, the rotating disk 1322 is located between the platform movable surface 1221 and the internal gear disk 1321. The rotating disk 1322 is connected to the platform movable surface 1221 in a transmission manner, and a portion of the rotating disk 1322 facing away from the platform movable surface 1221 is sleeved with the internal gear disk 1321. In this embodiment, the platform movable surface 1221 drives the rotating disk 1322 to rotate, thereby driving the internal gear disk 1321 to rotate. The rotating disk 1322 has an elongated hole on the side near the internal gear disk 1321. The elongated hole is axially aligned with the rotating disk 1322, and its axis is perpendicular to the axis of the rotating disk 1322.

[0040] Among them, such as Figure 3As shown, in this embodiment, the pin 1323 passes through the elongated hole and connects the rotating disk 1322 and the internal gear disk 1321, allowing the rotating disk 1322 to drive the internal gear disk 1321 to rotate via the pin 1323. Furthermore, in this embodiment, the pin 1323 and the elongated hole work together to allow the internal gear disk 1321 to move axially relative to the rotating disk 1322.

[0041] Optionally, the clamping member 1332 in this embodiment includes three movable jaws, which enclose to form a clamping structure with an adjustable diameter. The movable jaws are located in the annular space and are adapted to the outer conical surface of the positioning disk 1312 and the inner conical surface of the inner toothed disk 1321, and are guided and limited by the outer conical surface and the inner conical surface.

[0042] Specifically, in this embodiment, the outer toothed disc 1331 and the clamping member 1332 are provided with a radial T-slot on the side corresponding to each other. The radial T-slots are provided in a one-to-one correspondence with the movable grippers. Each movable gripper can slide along the corresponding radial T-slot to adjust the encircling diameter of the three movable grippers.

[0043] Optionally, such as Figure 3 As shown, the pneumatic impact assembly 140 in this embodiment also includes an impact cylinder 142. The impact cylinder 142 is mounted on the mounting base 110, with the platform movable surface 1221 facing away from the rotating disk 1322. Its output end is connected to the impact rod 141, used to drive the impact rod 141 to push the motor shaft on the impeller. It should be noted that a bushing is provided between the impact rod 141 and the hollow guide shaft 121 in this embodiment to ensure stable axial pushing movement of the impact rod 141 within the hollow guide shaft 121. In this embodiment, under the control of the pneumatic control solenoid valve, the impact cylinder 142 drives the impact rod 141 to impact the motor shaft, achieving impact separation of the motor shaft when clamped by the fan impeller.

[0044] Optionally, such as Figure 4 As shown, the impeller disassembly device 100 in this embodiment also includes a moving component 150. The moving component is sleeved on the connecting shaft sleeve 1311 and located on the side of the outer gear disk 1331 away from the clamping member 1332. The inner side of the moving component is connected to the connecting shaft sleeve 1311, and its outer side is fixedly connected to the inner gear disk 1321. It is used to drive the inner gear disk 1321, the connecting shaft sleeve 1311 and the positioning disk 1312 to move synchronously along the hollow guide shaft 121, so as to adjust the enclosing diameter of the clamping member 1332 together with the outer gear disk 1331.

[0045] Optionally, such as Figure 5As shown, the moving component in this embodiment includes a guide disk 151 and a rotating sleeve 152. The guide disk is sleeved on the connecting sleeve 1311, and the rotating sleeve is nested between the connecting sleeve 1311 and the guide disk. The guide disk is fixedly connected to one end of the internal gear disk 1321 near the platform body 122. The guide disk is used to drive the internal gear disk 1321, the connecting sleeve 1311, and the positioning disk 1312 to move synchronously along the hollow guide shaft 121, so as to further adjust the enclosing diameter of the clamping member 1332 together with the external gear disk 1331. Optionally, the guide disk 151 includes a cover plate 1511 and a connecting seat 1512. The cover plate is sleeved on the connecting sleeve, the rotating sleeve is nested between the connecting sleeve 1311 and the cover plate, and the connecting seat is sleeved on the cover plate. Its inner side is fixedly connected to the cover plate, for example, by bolts, and its outer side is fixedly connected to the internal gear disk.

[0046] The impeller disassembly device 100 of this embodiment achieves two-stage adjustment of the opening and closing range of the clamping member 1332 through the independent or synchronous axial movement control of the double-limiting guide structure composed of the inner gear disk 1321 and the positioning disk 1312 and the outer gear disk 1331. When the outer gear disk 1331 moves axially alone, the clamping diameter can be adjusted within the basic range. With the synchronous axial movement of the double-limiting guide structure composed of the inner gear disk 1321 and the positioning disk 1312, the maximum opening diameter of the clamping jaws can be further increased or the minimum clamping diameter can be reduced, further improving the clamping range, accommodating more workpieces of various sizes, and reducing the cost of changing chucks of different sizes.

[0047] Optionally, the impeller disassembly device in this embodiment also includes multiple position sensing sensors for detecting the position of movable parts in the impeller disassembly device, so as to better control its use and improve disassembly efficiency.

[0048] In this embodiment, the rotary drive 123 is activated, and the platform movable surface 1221 of the hollow rotating platform 120 rotates. The platform movable surface 1221 then drives the rotating disk 1322 to rotate. Furthermore, the rotating disk 1322 drives the internal gear disk 1321 to rotate through the pin 1323. The internal gear disk 1321 meshes with the external gear disk 1331, thereby driving the external gear disk 1331 to rotate. While rotating within the internal gear disk 1321, the external gear disk 1331 moves axially along the connecting bushing 1311, thereby driving the clamping member 1332 connected to it to move forward or backward.

[0049] Specifically, when the external gear disc 1331 drives the clamping member 1332 to move backward, that is, to move closer to the platform body 122, the three movable jaws close to clamp the impeller. After the three movable jaws clamp the impeller, the impact cylinder 142 is activated, and the impact rod 141 pushes forward to separate the motor shaft from the middle part of the impeller, thereby achieving impeller disassembly. Conversely, when the external gear disc 1331 drives the clamping member 1332 to move forward, that is, to move away from the platform body 122, the three movable jaws open to release the clamped impeller or clamp a larger diameter impeller.

[0050] In addition, this embodiment of the invention also provides a centrifugal fan maintenance device, which includes all of the above-mentioned impeller disassembly devices 100, and therefore has all the beneficial effects of all the impeller disassembly devices 100.

[0051] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An impeller disassembly device, characterized in that, include: Mounting base; A hollow rotating platform is mounted on a mounting base and has a hollow guide shaft, wherein the hollow guide shaft is provided with an axial through hole; The clamping assembly includes a first guide portion, a clamping portion, and a second guide portion arranged coaxially. The first guide portion is slidably sleeved on a hollow guide shaft. The second guide portion is sleeved on the first guide portion and forms an annular space with the first guide portion, and is driven to a hollow rotating platform. The clamping portion is located in the annular space and is driven to the second guide portion. The hollow rotating platform drives the second guide portion to rotate, thereby causing the clamping portion to move axially along the first guide portion, realizing the opening and closing of the clamping end of the clamping portion. The clamping portion is used to clamp impellers of different diameters. A pneumatic impact assembly, mounted on a mounting base, includes an impact rod that passes through the axial through hole and is coaxially arranged with a first guide part, a second guide part, and a clamping part. The impact rod is used to clamp the motor shaft on the impeller by impacting the clamping part, so as to separate the impeller and the motor shaft.

2. The impeller disassembly device according to claim 1, characterized in that, The hollow rotating platform includes: The platform body is fixedly mounted on the mounting base. A hollow guide shaft passes through the platform body. The side of the platform body near the clamping component has a rotatable platform movable surface. The platform movable surface is connected to the clamping component and is used to drive the clamping component to rotate. A rotary drive component, located within the platform body, is used to drive the rotating surface of the platform.

3. The impeller disassembly device according to claim 2, characterized in that, The first guidance section includes: A connecting sleeve is fitted onto the hollow guide shaft and is coaxially arranged with the hollow guide shaft, and can slide relative to the hollow guide shaft; The positioning plate is fixedly sleeved at the end of the connecting shaft sleeve that is away from the platform body.

4. The impeller disassembly device according to claim 3, characterized in that the clamping part... include: The external gear disc is sleeved on the connecting bushing and is located on the side of the positioning disc closer to the platform body. It can move along the axial direction of the connecting bushing. The axial length of the external gear disc is less than the length of the connecting bushing. The clamping component is located on the side of the outer gear disk away from the platform body and is radially slidably connected to the outer gear disk. The clamping end of the clamping component extends out of the axial end face of the annular space along the side away from the outer gear disk. The outer gear disk is used to drive the clamping component to move axially along the connecting bushing to realize the opening or closing of the clamping component.

5. The impeller disassembly device according to claim 4, characterized in that, The second guide section includes: An internal gear disk is coaxially arranged with the connecting sleeve and the external gear disk, and is located on the side of the external gear disk away from the connecting sleeve. It forms the annular space with the connecting sleeve and meshes with the external gear disk for transmission. The two opposite sides of the internal gear disk and the positioning sleeve have matching inner and outer conical surfaces, respectively. The distance between the inner and outer conical surfaces is constant. The inner and outer conical surfaces together position the clamping member. The internal gear disk is used to drive the external gear disk to rotate so that the external gear disk moves along the axial direction of the connecting sleeve. The rotating disk is located between the platform's movable surface and the internal gear disk. It is connected to the platform's movable surface for transmission and partially sleeved with the internal gear disk. The platform's movable surface drives the rotating disk to rotate, thereby driving the internal gear disk to rotate. The rotating disk has an elongated hole on the side near the internal gear disk, and the axis of the elongated hole is perpendicular to the axis of the rotating disk. A pin is inserted through the elongated hole, connecting the rotating disk and the internal gear disk. The pin and the elongated hole work together to allow the internal gear disk to move axially relative to the rotating disk.

6. The impeller disassembly device according to claim 5, characterized in that, The clamping component includes three movable jaws, which enclose to form a clamping structure with an adjustable diameter. The movable jaws are located in the annular space and are limited by the outer conical surface of the positioning disk and the inner conical surface of the internal gear disk. The outer gear disc has a radial T-slot on the side corresponding to the clamping component. The radial T-slots correspond one-to-one with the movable jaws. Each movable jaw can slide along the corresponding radial T-slot to adjust the encircling diameter of the three movable jaws.

7. The impeller disassembly device according to claim 5, characterized in that, The aerodynamic impact assembly also includes: The impact cylinder is mounted on the mounting base, with the movable surface of the platform facing away from the rotating disk. Its output end is connected to the impact rod, which is used to drive the impact rod to push the motor shaft on the impeller.

8. The impeller disassembly device according to claim 5, characterized in that, It also includes a movable component, which is sleeved on the connecting bushing and located on the side of the outer gear plate away from the clamping member. The inner side of the movable component is connected to the connecting bushing, and its outer side is fixedly connected to the inner gear plate. It is used to drive the inner gear plate, the connecting bushing, and the positioning plate to move synchronously along the hollow guide shaft, so as to adjust the encircling diameter of the clamping member together with the outer gear plate.

9. The impeller disassembly device according to claim 8, characterized in that, The moving component includes a guide disk and a rotating bushing. The guide disk is sleeved on the connecting bushing, and the rotating bushing is nested between the connecting bushing and the guide disk. The guide disk is fixedly connected to the end of the inner gear disk near the platform body. The guide disk is used to drive the inner gear disk, the connecting bushing, and the positioning disk to move synchronously along the hollow guide shaft axially, so as to adjust the encircling diameter of the clamping parts together with the outer gear disk.

10. A centrifugal fan maintenance device, characterized in that, Includes the impeller disassembly device as described in any one of claims 1 to 9.

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