Impeller dismounting device

Abstract

The utility model relates to fan maintenance technical field discloses a kind of impeller dismounting device, including first clamping piece, second clamping piece, pusher plate and at least two installation rods;First clamping piece and second clamping piece are all provided with clamping cavity, and each clamping cavity is provided with inner lug;First clamping piece and second clamping piece are all provided with outer lug, and the clamping cavity is formed accommodating cavity after being connected by first clamping piece and second clamping piece, and the matching design of inner lug and impeller radial groove is combined, the accurate positioning and uniform clamping of impeller are realized;Outer lug is used as structure reinforcing part, not only strengthen the local strength of first clamping piece and second clamping piece, also provide stable installation base for installation rod, so that the axial force transmitted by installation rod of pusher plate can be uniformly, stably act on the matching surface of impeller and motor shaft, avoid direct artificial knock impeller or heat impeller shaft sleeve to cause impeller or motor shaft damage, significantly improve dismounting efficiency and security.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine maintenance technology, and in particular to an impeller disassembly device. Background Technology

[0002] During wind turbine maintenance, the wind turbine impeller needs to be disassembled. To ensure the stability of the impeller's operation, the impeller is usually installed on the motor shaft with an interference fit through the impeller shaft sleeve to ensure sufficient connection strength between the impeller and the motor shaft. However, long-term operation of the wind turbine causes corrosion on the mating surfaces of the impeller shaft sleeve and the motor shaft, making it difficult to disassemble the impeller.

[0003] In practice, maintenance personnel often use tools such as hammers to strike the impeller, using the impact force to overcome the friction between the mating surfaces of the impeller bushing and the motor shaft and to break the rust layer, causing the impeller to loosen relative to the motor shaft, thus achieving impeller disassembly. However, striking the impeller can easily damage the impeller or motor shaft, affecting the equipment's precision. Maintenance personnel also often use heating to expand the impeller bushing, creating a gap between the impeller bushing and the impeller shaft, thereby achieving impeller disassembly. However, heating the impeller bushing is not only time-consuming, but also prone to causing thermal stress damage to the impeller or motor shaft due to improper temperature control.

[0004] In summary, existing methods for disassembling impellers are not only time-consuming and labor-intensive, but also easily lead to damage to the impeller or motor shaft. Utility Model Content

[0005] The technical problem this invention aims to solve is that existing methods of disassembling impellers are not only time-consuming and labor-intensive, but also easily lead to damage to the impeller or motor shaft.

[0006] To solve the above-mentioned technical problems, this utility model provides an impeller disassembly device, including a first clamping member, a second clamping member, a push plate, and at least two mounting rods;

[0007] Both the first clamping member and the second clamping member have clamping cavities, and each clamping cavity is provided with an inner protrusion.

[0008] The first clamping member and the second clamping member are detachably connected. The clamping cavity of the first clamping member and the clamping cavity of the second clamping member fit together to form a receiving cavity, which is used to receive the impeller. Each inner protrusion is used to abut against the radial groove of the impeller.

[0009] Both the outer surfaces of the first clamping member and the outer surfaces of the second clamping member are provided with external protrusions. One end of each mounting rod is connected to each external protrusion, and the other end of each mounting rod is connected to the push plate. Each mounting rod extends axially.

[0010] Preferably, a push rod is installed at the end of the push plate away from the receiving cavity, and a snap-fit ​​connector is provided on the push rod.

[0011] Preferably, the snap-fit ​​connector is located at the end of the push plate, and the snap-fit ​​connector is hexagonal.

[0012] Preferably, the bottom of the push rod is connected to a mounting plate, the mounting plate is provided with a number of first light holes, the top of the push plate is provided with a first threaded hole corresponding to each first light hole, a first bolt is installed in the first threaded hole, the first bolt passes through the first light hole along the axial direction and is threadedly connected to the first threaded hole.

[0013] Preferably, both the first clamping member and the second clamping member have mating portions on their side walls. Each mating portion is parallel to the connecting surface of the first clamping member and the second clamping member. Each mating portion has a second optical hole. A second bolt and a first nut are installed between each mating portion. After the second bolt passes through each second optical hole, it is threadedly connected to the first nut.

[0014] Preferably, there are four mounting rods, each with a second threaded hole on both sides of the outer protrusion, and each mounting rod has a first threaded section at the bottom that mates with the second threaded hole. The four mounting rods are arranged in a rectangular pattern.

[0015] Preferably, each mounting rod has a third threaded hole at its top, and the push plate has a third smooth hole corresponding to each third threaded hole. A third bolt is installed in the third threaded hole, and the third bolt passes through the third smooth hole axially and is threadedly connected to the third threaded hole.

[0016] Preferably, the cross-sectional shape of both the first clamping member and the second clamping member is a semi-circular ring.

[0017] Preferably, the cross-sectional shape of each external protrusion is an arc extending away from the receiving cavity.

[0018] Preferably, the cross-sectional shape of each inner protrusion is semi-circular, and the first clamping member and the second clamping member are connected so that the two inner protrusions fit together to form an inner convex circular block, and the inner convex circular block matches the shape and size of the radial groove of the impeller.

[0019] Compared with the prior art, the impeller disassembly device of this utility model has the following advantages:

[0020] The impeller disassembly device of this utility model forms a receiving cavity by connecting the first clamping member and the second clamping member and fitting the clamping cavity together. Combined with the matching design of the inner protrusion and the radial groove of the impeller, it achieves precise positioning and uniform clamping of the impeller. The outer protrusion, as a structural reinforcement, not only enhances the local strength of the first clamping member and the second clamping member, but also provides a stable mounting base for the mounting rod. This allows the axial force transmitted by the push plate through the mounting rod to act evenly and stably on the mating surface of the impeller and the motor shaft, thereby effectively overcoming the combined resistance of interference fit and corrosion. It avoids damage to the impeller or motor shaft caused by directly striking the impeller manually or heating the impeller bushing, and significantly improves disassembly efficiency and safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an impeller disassembly device provided in an embodiment of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of an impeller disassembly device provided in an embodiment of this utility model. Figure 2 ;

[0023] Figure 3 This is a top view of the first clamping member and the second clamping member cooperating in an embodiment of the present invention for an impeller disassembly device.

[0024] In the figure, 11 is the first clamping component; 12 is the second clamping component; 2 is the push plate; 3 is the mounting rod; 4 is the receiving cavity; 5 is the inner protrusion; 6 is the outer protrusion; 7 is the push rod; 8 is the docking part; and 9 is the mounting plate. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figures 1 to 3 As shown, a preferred embodiment of the present invention provides an impeller disassembly device, which includes a first clamping member 11, a second clamping member 12, a push plate 2, and at least two mounting rods 3.

[0030] Both the first clamping member 11 and the second clamping member 12 have clamping cavities, and each clamping cavity is provided with an inner protrusion 5.

[0031] The first clamping member 11 and the second clamping member 12 are detachably connected. The clamping cavity of the first clamping member 11 and the clamping cavity of the second clamping member 12 fit together to form a receiving cavity 4. The receiving cavity 4 is used to receive the impeller. Each inner protrusion 5 is used to abut against the radial groove of the impeller.

[0032] Both the outer side of the first clamping member 11 and the outer side of the second clamping member 12 are provided with external protrusions 6. One end of each mounting rod 3 is connected to each external protrusion 6, and the other end of each mounting rod 3 is connected to the push plate 2. Each mounting rod 3 extends axially.

[0033] The impeller disassembly device of this utility model forms a receiving cavity 4 by connecting the first clamping member 11 and the second clamping member 12 and fitting the clamping cavity together. Combined with the matching design of the inner protrusion 5 and the radial groove of the impeller, it realizes the precise positioning and uniform clamping of the impeller. The outer protrusion 6, as a structural reinforcement, not only enhances the local strength of the first clamping member 11 and the second clamping member 12, but also provides a stable mounting base for the mounting rod 3. This allows the axial force transmitted by the push plate 2 through the mounting rod 3 to act evenly and stably on the mating surface of the impeller and the motor shaft, thereby effectively overcoming the combined resistance of interference fit and corrosion, avoiding damage to the impeller or motor shaft caused by directly striking the impeller manually or heating the impeller bushing, and significantly improving disassembly efficiency and safety.

[0034] Specifically, a push rod 7 is installed at the end of the push plate 2 away from the receiving cavity 4, and a snap-fit ​​connector is provided on the push rod 7.

[0035] Specifically, the snap-fit ​​connector is located at the end of the push plate 2, and the snap-fit ​​connector is a hexagonal head.

[0036] When it is difficult to separate the impeller from the motor shaft by applying axial force to the push plate 2, the operator puts the hexagonal ferrule on the wrench into the hexagonal head, and then rotates the wrench to apply rotational torque to the push rod 7. This causes the impeller, which is held by the first clamping member 11 and the second clamping member 12, to rotate. The rotation of the impeller generates circumferential shear force between the impeller and the motor shaft, which helps to overcome the static friction between the impeller and the motor shaft. This achieves an organic combination of axial pushing and rotational force application, significantly reducing the difficulty of disassembling the impeller and taking into account both operational safety and disassembly efficiency.

[0037] Specifically, the bottom of the push rod 7 is connected to the mounting plate 9, which has several first light holes. The top of the push plate 2 has a first threaded hole corresponding to each first light hole. A first bolt is installed in the first threaded hole. After the first bolt passes through the first light hole axially, it is threadedly connected to the first threaded hole.

[0038] Mounting plate 9 and top rod 7 are integrally formed. Mounting plate 9 has a square cross-section and four first light holes. Each first light hole is located at one of the four corners of mounting plate 9, so that the four first bolts are distributed in a rectangular shape, which significantly increases the connection strength between top rod 7 and push plate 2.

[0039] Specifically, both sides of the first clamping member 11 and the second clamping member 12 are provided with mating parts 8. Each mating part 8 is parallel to the connecting surface of the first clamping member 11 and the second clamping member 12. Each mating part 8 is provided with a second light hole. A second bolt and a first nut are installed between each mating part 8. After the second bolt passes through each second light hole, it is threadedly connected to the first nut.

[0040] Each docking part 8 is integrally formed with the first clamping member 11 and the second clamping member 12. By setting the docking part 8, the contact area of ​​the connecting surfaces of the first clamping member 11 and the second clamping member 12 is increased. Furthermore, a second light hole is provided on the docking part 8 to avoid opening holes in the first clamping member 11 and the second clamping member 12, thereby reducing the structural strength.

[0041] The first clamping member 11 and the second clamping member 12 are each provided with two sets of docking parts 8, which are axially spaced apart, making the connection between the first clamping member 11 and the second clamping member 12 more stable and further increasing the stability of the connection.

[0042] Specifically, there are four mounting rods 3. Each outer protrusion 6 has a second threaded hole on both sides. Each mounting rod 3 has a first threaded section at the bottom that mates with the second threaded hole. The four mounting rods 3 are arranged in a rectangular shape to form a stable force transmission structure, ensuring that the force on the push plate 2 is transmitted evenly and stably to the first clamping member 11 and the second clamping member 12.

[0043] Specifically, each mounting rod 3 has a third threaded hole at its top, and the push plate 2 has a third smooth hole corresponding to each third threaded hole. A third bolt is installed in the third threaded hole. After the third bolt passes through the third smooth hole along the axial direction, it is threadedly connected to the third threaded hole. By setting the corresponding third smooth hole and third threaded hole, the push plate 2 and the mounting rod 3 can be quickly assembled and disassembled. The rigid force transmission characteristics of the bolt connection ensure that the pushing force is evenly distributed along the axial direction, avoiding force transmission loss or off-center load risk caused by loose connection.

[0044] Specifically, the cross-sectional shape of the first clamping member 11 and the second clamping member 12 is semi-circular. The symmetrical design of the semi-circular cross-section facilitates the control of processing and assembly accuracy, and matches the outer circumferential contour of the circular impeller. After assembly, a complete circular receiving cavity 4 is formed, which increases the contact area with the impeller and avoids stress concentration caused by local clamping.

[0045] Specifically, the cross-sectional shape of each outer protrusion 6 is an arc extending away from the receiving cavity 4. The arc-shaped outer protrusion 6 is coordinated with the cross-sectional profile of the semi-circular ring clamping member, and avoids sharp edges and corners from causing scratches to the operator.

[0046] Specifically, the cross-sectional shape of each inner protrusion 5 is a semi-circular ring. The first clamping member 11 and the second clamping member 12 are connected so that the two inner protrusions 5 fit together to form an inner convex circular ring block. The inner convex circular ring block matches the shape and size of the radial groove of the impeller, realizing the seamless fit between the clamping surface of the clamping member and the groove of the impeller, improving the clamping stability and force transmission efficiency. The semi-circular ring structure forms a complete annular contact surface when assembled, which can evenly distribute the axial force transmitted by the push plate 2 and avoid local clamping of the impeller groove, which would cause impeller wear or deformation.

[0047] In other embodiments, the bottom of each mounting rod 3 is welded to the outer protrusion 6.

[0048] In other embodiments, the push rod 7 is integrally formed with the push plate 2.

[0049] The working process of this utility model is as follows: The mating portions 8 of the first clamping member 11 and the second clamping member 12 are fitted together, and each inner protrusion 5 is tightly fitted with the impeller groove. A second bolt is then inserted through the second open hole of each mating portion 8 and locked with a first nut, thus achieving the mating installation of the first clamping member 11 and the second clamping member 12. The first threaded sections at the bottom of the four mounting rods 3 are screwed into the second threaded holes on each outer protrusion 6, completing the positioning installation of the mounting rods 3. The third threaded hole at the top of the mounting rod 3 is axially aligned with the corresponding third open hole of the push plate 2. A third bolt is inserted and screwed in to lock, completing the rigid connection between the push plate 2 and each mounting rod 3. 2. Apply axial thrust to perform impeller disassembly. When applying axial force to the push plate 2 still fails to disassemble the impeller, place the mounting plate 9 at the bottom of the push rod 7 on the push plate 2, aligning the first smooth hole on the mounting plate 9 with the first threaded hole at the top of the push plate 2, insert the first bolt, and fix the push rod 7 on the push plate 2. After assembly, clamp the hexagonal snap-fit ​​sleeve on the wrench onto the hexagonal head on the push rod 7, and then rotate the wrench to apply rotational torque to the push rod 7, thereby causing the impeller, which is jointly clamped by the first clamping member 11 and the second clamping member 12, to rotate. The rotation of the impeller generates circumferential shear force between the impeller and the motor shaft, thus completing the disassembly of the impeller.

[0050] In summary, this utility model embodiment provides an impeller disassembly device. After the first and second clamping members are connected, the clamping cavities fit together to form a receiving cavity. Combined with the matching design of the inner protrusion and the radial groove of the impeller, precise positioning and uniform clamping of the impeller are achieved. The outer protrusion, as a structural reinforcement, not only enhances the local strength of the first and second clamping members, but also provides a stable mounting base for the mounting rod. This allows the axial force transmitted by the push plate through the mounting rod to act evenly and stably on the mating surface of the impeller and the motor shaft, thereby effectively overcoming the combined resistance of interference fit and corrosion. It also avoids damage to the impeller or motor shaft caused by directly striking the impeller manually or heating the impeller bushing, significantly improving disassembly efficiency and safety.

[0051] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An impeller disassembly device, characterized in that, It includes a first clamping member (11), a second clamping member (12), a push plate (2), and at least two mounting rods (3); Both the first clamping member (11) and the second clamping member (12) have clamping cavities, and each clamping cavity is provided with an inner protrusion (5); The first clamping member (11) and the second clamping member (12) are detachably connected. The clamping cavity of the first clamping member (11) and the clamping cavity of the second clamping member (12) fit together to form a receiving cavity (4). The receiving cavity (4) is used to receive the impeller. Each of the inner protrusions (5) is used to abut against the radial groove of the impeller. Both the outer side of the first clamping member (11) and the outer side of the second clamping member (12) are provided with external protrusions (6). One end of each mounting rod (3) is connected to each external protrusion (6), and the other end of each mounting rod (3) is connected to the push plate (2). Each mounting rod (3) extends axially.

2. The impeller disassembly device according to claim 1, characterized in that, The push plate (2) is equipped with a push rod (7) at one end away from the receiving cavity (4), and the push rod (7) is provided with a snap-fit ​​connector.

3. The impeller disassembly device according to claim 2, characterized in that, The snap-fit ​​connector is located at the end of the push plate (2), and the snap-fit ​​connector is a hexagonal head.

4. The impeller disassembly device according to claim 2, characterized in that, The bottom of the push rod (7) is connected to the mounting plate (9), which has a plurality of first light holes. The top of the push plate (2) has a first threaded hole corresponding to each of the first light holes. A first bolt is installed in the first threaded hole. The first bolt passes through the first light hole along the axial direction and is threadedly connected to the first threaded hole.

5. The impeller disassembly device according to claim 1, characterized in that, Both sides of the first clamping member (11) and the second clamping member (12) are provided with mating portions (8). Each mating portion (8) is parallel to the connecting surface of the first clamping member (11) and the second clamping member (12). Each mating portion (8) is provided with a second light hole. A second bolt and a first nut are installed between each mating portion (8). After the second bolt passes through each second light hole, it is threadedly connected to the first nut.

6. The impeller disassembly device according to claim 1, characterized in that, There are four mounting rods (3), and each of the outer protrusions (6) has a second threaded hole on both sides. Each mounting rod (3) has a first threaded section at the bottom that mates with the second threaded hole. The four mounting rods (3) are arranged in a rectangular shape.

7. The impeller disassembly device according to claim 1, characterized in that, Each of the mounting rods (3) has a third threaded hole at its top. The push plate (2) has a third light hole corresponding to each third threaded hole. A third bolt is installed in the third threaded hole. The third bolt passes through the third light hole along the axial direction and is threadedly connected to the third threaded hole.

8. The impeller disassembly device according to claim 1, characterized in that, The cross-sectional shape of the first clamping member (11) and the second clamping member (12) is a semi-circular ring.

9. The impeller disassembly device according to claim 8, characterized in that, The cross-sectional shape of each of the external protrusions (6) is an arc extending away from the receiving cavity (4).

10. The impeller disassembly device according to claim 8, characterized in that, Each of the inner protrusions (5) has a semi-circular cross-sectional shape. The first clamping member (11) and the second clamping member (12) are connected so that the two inner protrusions (5) fit together to form an inner convex circular block. The inner convex circular block matches the shape and size of the impeller radial groove.

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